Adam_Podprojekt_v1

.idea/ProjektAI.iml

@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Python 3.7 (ProjektAI) (3)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TestRunnerService">

.idea/misc.xml

@@ -3,4 +3,5 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (ProjektAI) (3)" project-jdk-type="Python SDK" />
 </project>

kelner/main.py

@@ -1,60 +1,64 @@
 import pygame
-from src.components.GridBoard import GridBoard
-from src.managers.DrawableCollection import DrawableCollection
-from src.managers.MenuManager import MenuManager
-from src.components.Waiter import Waiter
-from src.components.Table import Table
-from src.managers.TaskManager import TaskManager
+from kelner.src.components.GridBoard import GridBoard
+from kelner.src.components.Waiter import Waiter
+from kelner.src.components.Table import Table
+from kelner.src.managers.DrawableCollection import DrawableCollection
+from kelner.src.managers.MenuManager import MenuManager
+from kelner.src.managers.TableManager import TableManager
+from kelner.src.managers.WaiterManager import WaiterManager
 
-#create screen consts
-CellSize     = 100 #pixel size of 1 square cell in the grid
-GridCountX   = 15 #number of columns in grid
-GridCountY   = 9 #number of rows in grid
-ScreenWidth  = CellSize * GridCountX #screen width in pixels
-ScreenHeight = CellSize * GridCountY #screen height in pixels
-Offset = 50
+# create screen consts
+Scale        = 2                  # scale for all images used within project
+CellSize     = round(50 * Scale)  # pixel size of 1 square cell in the grid
+PaintOffset  = CellSize           # pixel size of paint offset for all drawables
+GridCountX   = 15                 # number of columns in grid
+GridCountY   = 9                  # number of rows in grid
+ScreenWidth  = CellSize * GridCountX + 2 * PaintOffset  # screen width in pixels
+ScreenHeight = CellSize * GridCountY + 2 * PaintOffset  # screen height in pixels
 
-#initialize background
-gridBoard = GridBoard(ScreenWidth+200, ScreenHeight+200, CellSize)
+# initialize background
+gridBoard = GridBoard(ScreenWidth, ScreenHeight)
 
-#initialize drawable objects manager
+# initialize drawable objects manager
 drawableManager = DrawableCollection()
 
-#initialize menu manager
+# initialize menu manager
 menuManager = MenuManager()
 
-#initialize waiter component
-waiter = Waiter(0, 0, 0, GridCountX - 1, 0, GridCountY - 1, CellSize)
+# initialize waiter component
+waiter = Waiter(0, 0, 0, GridCountX - 1, 0, GridCountY - 1, CellSize, PaintOffset)
 
-#adds waiter to drawable collection
+# adds waiter to drawable collection
 drawableManager.add(waiter)
 
-#initialize a number of tables given in range
-for i in range(1, 20):
-    table = Table(0, GridCountX - 1, 0, GridCountY - 1, CellSize)
+# initialize a number of tables given in range
+for i in range(1, 45):
+    table = Table(0, GridCountX - 1, 0, GridCountY - 1, CellSize, PaintOffset)
     drawableManager.generatePosition(table)
     drawableManager.add(table)
 
-#main loop
+# new thread controlling tables
+tableTask = TableManager(drawableManager, menuManager)
+tableTask.start()
 
-#object that controlls repainting of changed objects
-doRepaint = [True]
-
-#new thread
-task = TaskManager(drawableManager, menuManager, doRepaint)
-task.start()
+# new thread controlling waiter
+waiterTask = WaiterManager(drawableManager)
+waiterTask.start()
 
+# main loop
 running = True
 while running:
 
     for event in pygame.event.get():
         if event.type == pygame.QUIT:
+            tableTask.stop()
+            waiterTask.stop()
             running = False
 
-        #handles keyboard events
+        # handles keyboard events
         if event.type == pygame.KEYDOWN:
             if event.key == pygame.K_LEFT:
-                #checks if new waiter's position to the left is not occupied by other object
+                # checks if new waiter's position to the left is not occupied by other object
                 if drawableManager.isPositionAvailable(waiter.getX() - 1, waiter.getY()):
                     waiter.moveLeft()
             if event.key == pygame.K_RIGHT:
@@ -69,13 +73,11 @@ while running:
                 # checks if new waiter's position down is not occupied by other object
                 if drawableManager.isPositionAvailable(waiter.getX(), waiter.getY() + 1):
                     waiter.moveDown()
-            doRepaint[0] = True
+            drawableManager.forceRepaint()
 
     # repaints all objects to the screen
-    # is set only on initial paint or after keyboard event
-    if doRepaint[0]:
+    # is set only on initial paint or after keyboard event or call to forceRepaint()
+    if drawableManager.mustRepaint():
         gridBoard.reinitialize()
         gridBoard.draw(drawableManager)
         gridBoard.udpdate()
-        doRepaint[0] = False
-        drawableManager.collectOrders()

kelner/src/algorithms/AStar/Finder.py

@@ -0,0 +1,125 @@
+from queue import PriorityQueue
+from kelner.src.algorithms.AStar.Node import Node
+
+
+class Finder:
+
+    def __init__(self, table):
+        self._table = table
+        self._xMin = 0
+        self._yMin = 0
+        self._xMax = len(table[0]) - 1
+        self._yMax = len(table) - 1
+        self.__isDiagonal = False
+
+    def _set(self, x, y, v):
+        self._table[y][x] = v
+
+    def _get(self, x, y):
+        return self._table[y][x]
+
+    # returns right position relative to the node
+    def __incXnopY(self, node, neighbours):
+        if node.x < self._xMax and self._get(node.x + 1, node.y) == 0:
+            neighbours.append(Node(node, node.x + 1, node.y, node.distance + 1))
+
+    # returns left position relative to the node
+    def __decXnopY(self, node, neighbours):
+        if self._xMin < node.x and self._get(node.x - 1, node.y) == 0:
+            neighbours.append(Node(node, node.x - 1, node.y, node.distance + 1))
+
+    # returns top position relative to the node
+    def __nopXincY(self, node, neighbours):
+        if node.y < self._yMax and self._get(node.x, node.y + 1) == 0:
+            neighbours.append(Node(node, node.x, node.y + 1, node.distance + 1))
+
+    # returns bottom position relative to the node
+    def __nopXdecY(self, node, neighbours):
+        if self._yMin < node.y and self._get(node.x, node.y - 1) == 0:
+            neighbours.append(Node(node, node.x, node.y - 1, node.distance + 1))
+
+    # returns left top position relative to the node
+    def __decXdecY(self, node, neighbours):
+        if (self._xMin < node.x and self._yMin < node.y and
+                self._get(node.x - 1, node.y - 1) == 0 and
+                self._get(node.x - 1, node.y) == 0 and
+                self._get(node.x, node.y - 1) == 0):
+            neighbours.append(Node(node, node.x - 1, node.y - 1, node.distance + 2))
+
+    # returns left bottom position relative to the node
+    def __decXincY(self, node, neighbours):
+        if (self._xMin < node.x and node.y < self._yMax and
+                self._get(node.x - 1, node.y + 1) == 0 and
+                self._get(node.x - 1, node.y) == 0 and
+                self._get(node.x, node.y + 1) == 0):
+            neighbours.append(Node(node, node.x - 1, node.y + 1, node.distance + 2))
+
+    # returns right bottom position relative to the node
+    def __incXincY(self, node, neighbours):
+        if (node.x < self._xMax and node.y < self._yMax and
+                self._get(node.x + 1, node.y + 1) == 0 and
+                self._get(node.x + 1, node.y) == 0 and
+                self._get(node.x, node.y + 1) == 0):
+            neighbours.append(Node(node, node.x + 1, node.y + 1, node.distance + 2))
+
+    # returns right top position relative to the node
+    def __incXdecY(self, node, neighbours):
+        if (node.x < self._xMax and self._yMin < node.y and
+                self._get(node.x + 1, node.y - 1) == 0 and
+                self._get(node.x + 1, node.y) == 0 and
+                self._get(node.x, node.y - 1) == 0):
+            neighbours.append(Node(node, node.x + 1, node.y - 1, node.distance + 2))
+
+    # returns all plausible positions relative to the node
+    def __getNeighbours(self, node):
+        neighbours = []
+        self.__nopXincY(node, neighbours)
+        self.__incXnopY(node, neighbours)
+        self.__decXnopY(node, neighbours)
+        self.__nopXdecY(node, neighbours)
+        if self.__isDiagonal:
+            self.__decXdecY(node, neighbours)
+            self.__decXincY(node, neighbours)
+            self.__incXincY(node, neighbours)
+            self.__incXdecY(node, neighbours)
+        return neighbours
+
+    # main algorithm - simplification of well known A*
+    def __getPath(self, origin, target):
+        Q = PriorityQueue()
+        V = set()
+        Q.put(origin)
+        while not Q.empty():
+            head = Q.get()
+            if head == target:
+                return head
+            V.add(head)
+            for node in self.__getNeighbours(head):
+                if node not in V:
+                    node.estimated = node.distance + node.getDistanceTo(target)
+                    Q.put(node)
+                    V.add(node)
+        return None
+
+    # returns neighbours for locationXY-tuple as list of tuple(x,y)
+    def getNeighbours(self, locationXY, isDiagonal):
+        neighboursXY = []
+        self.__isDiagonal = isDiagonal
+        location = Node(None, locationXY[0], locationXY[1], 0)
+        neighbours = self.__getNeighbours(location)
+        for neighbour in neighbours:
+            neighboursXY.append((neighbour.x, neighbour.y))
+        return neighboursXY
+
+    # returns the shortest path as list of tuple(x,y) from originXY-tuple to targetXY-tuple
+    def getPath(self, originXY, targetXY, isDiagonal):
+        self.__isDiagonal = isDiagonal
+        origin = Node(None, originXY[0], originXY[1], 0)
+        target = Node(None, targetXY[0], targetXY[1], 0)
+        result = self.__getPath(origin, target)
+        path = []
+        while result is not None:
+            if result.parent is not None:
+                path.insert(0, (result.x, result.y))
+            result = result.parent
+        return path

kelner/src/algorithms/AStar/FinderTest.py

@@ -0,0 +1,60 @@
+from random import randint
+from kelner.src.algorithms.AStar.Finder import Finder
+
+
+class FinderTest(Finder):
+
+    def __init__(self, table):
+        super().__init__(table)
+
+    def __setValues(self, xys, v):
+        if xys is not None:
+            for xy in xys:
+                self._set(xy[0], xy[1], v)
+
+    def print(self, xys):
+        self.__setValues(xys, 2)
+        for row in self._table:
+            for col in row:
+                v = ' ' if col == 0 else '#' if col == 1 else 'O'
+                print('|', v, sep='', end='')
+            print('|')
+        self.__setValues(xys, 0)
+
+    def getRandomTuple(self):
+        while True:
+            x = randint(self._xMin, self._xMax)
+            y = randint(self._yMin, self._yMax)
+            if self._get(x, y) == 0:
+                break
+        return x, y
+
+    def getRandomBorderTuple(self):
+        xSet = [self._xMin, self._xMax]
+        ySet = [self._yMin, self._yMax]
+        while True:
+            x = randint(self._xMin, self._xMax)
+            y = randint(self._yMin, self._yMax)
+            if (x in xSet or y in ySet) and self._get(x, y) == 0:
+                break
+        return x, y
+
+    def fillRandom(self):
+        for _ in range(120):
+            while True:
+                x = randint(self._xMin, self._xMax)
+                y = randint(self._yMin, self._yMax)
+                if self._get(x, y) == 0:
+                    break
+            self._set(x, y, 1)
+
+
+cols = 20
+rows = 20
+table = [[0] * cols for i in range(rows)]
+finder = FinderTest(table)
+finder.fillRandom()
+originXY = finder.getRandomBorderTuple()
+targetXY = finder.getRandomBorderTuple()
+result = finder.getPath(originXY, targetXY, True)
+finder.print(result)

kelner/src/algorithms/AStar/Node.py

@@ -0,0 +1,34 @@
+from math import sqrt
+
+
+class Node:
+
+    def __init__(self, parent, x, y, distance):
+        self.parent = parent
+        self.x = x
+        self.y = y
+        self.distance = distance
+        self.estimated = distance
+
+    # returns distance from the object to other node
+    def getDistanceTo(self, other):
+        dx = self.x - other.x
+        dy = self.y - other.y
+        return sqrt(dx * dx + dy * dy)
+        # abs(dx) + abs(dy)
+
+    # used by str() method to represent the object
+    def __repr__(self):
+        return "%s:%s" % (self.x, self.y)
+
+    # generates hash key for Set
+    def __hash__(self):
+        return hash(str(self))
+
+    # operator (==) for Set (determines if the object equals other node)
+    def __eq__(self, other):
+        return (self.x == other.x) and (self.y == other.y)
+
+    # operator (>) for PriorityQueue comparison (determines the objects order)
+    def __gt__(self, other):
+        return self.estimated > other.estimated

kelner/src/components/Drawable.py

@@ -5,29 +5,33 @@ class Drawable:
     RED     = (255, 0, 0)
     GREEN   = (0, 255, 0)
 
-    def __init__(self, x, y, minX, maxX, minY, maxY, ratio):
+    def __init__(self, x, y, minX, maxX, minY, maxY, cellSize, offset):
         self.__minX = minX
         self.__maxX = maxX
         self.__minY = minY
         self.__maxY = maxY
         self.setX(x)
         self.setY(y)
-        self.__ratio = ratio #cell size
+        self.__cellSize  = cellSize  # cell size in pixels
+        self.__offset = offset       # paint offset in pixels
 
     def setX(self, x):
-        if (x < self.__minX or self.__maxX < x):
+        if x < self.__minX or self.__maxX < x:
             return False
         else:
             self.__x = x
             return True
 
     def setY(self, y):
-        if (y < self.__minY or self.__maxY < y):
+        if y < self.__minY or self.__maxY < y:
             return False
         else:
             self.__y = y
             return True
 
+    def isPositionCorrect(self, x, y):
+        return self.__minX <= x <= self.__maxX and self.__minY <= y <= self.__maxY
+
     def getX(self):
         return self.__x
 
@@ -46,8 +50,14 @@ class Drawable:
     def getMaxY(self):
         return self.__maxY
 
-    def getRatio(self):
-        return self.__ratio
+    def getCellSize(self):
+        return self.__cellSize
+
+    def getOffset(self):
+        return self.__offset
 
     def draw(self, screen):
-        pass
+        pass
+
+    def drawAux(self, screen):
+        pass

kelner/src/components/GridBoard.py

@@ -1,28 +1,32 @@
 import pygame
+from kelner.src.managers.ImageCache import ImageCache, Images
+
 
 class GridBoard:
 
-    def __init__(self, width, height, cellSize):
-        pygame.init() #initialize the pygame
-        pygame.display.set_caption("Bardzo mądry kelner") #window caption
+    def __init__(self, width, height):
+        pygame.init()  # initialize the pygame
+        pygame.display.set_caption("Bardzo mądry kelner")  # window caption
         self.__width = width
         self.__height = height
-        self.__cellSize = cellSize
         self.__screen = pygame.display.set_mode((width, height))  # initialize screen
-        self.Offset = 50
 
-    #fills the screen with white and draws grid
+    # draws the background
     def reinitialize(self):
+        imageBackground = ImageCache.getInstance().getImage(Images.Background, self.__width, self.__height)
+        self.__screen.blit(imageBackground, (0, 0))
+        """ # code below fills the screen with white and draws grid
         self.__screen.fill((255, 255, 255))
         for x in range(0, self.__width, self.__cellSize):
             pygame.draw.line(self.__screen, (0,0,0), (x,0), (x,(self.__height - 1)))
         for y in range(0, self.__height, self.__cellSize):
             pygame.draw.line(self.__screen, (0,0,0), (0,y), ((self.__width - 1),y))
+        """
 
-    #draws object on screen
+    # draws object on screen
     def draw(self, component):
         component.draw(self.__screen)
 
-    #updates screen
+    # updates screen
     def udpdate(self):
-        pygame.display.update()
+        pygame.display.update()

kelner/src/components/Table.py

@@ -1,79 +1,33 @@
-import pygame
-from enum import Enum
-from .Drawable import Drawable
 import random
+from enum import Enum
+from kelner.src.components.Drawable import Drawable
+from kelner.src.managers.ImageCache import ImageCache, Images
+
+
+# status of the table
+class Status(Enum):
+    NotReady = 0
+    Ready    = 1
+    Waiting  = 2
+    Served   = 3
+
 
 class Table(Drawable):
 
-    def __init__(self, minX, maxX, minY, maxY, ratio):
-        #call base class constructor
-        Drawable.__init__(self, 0, 0, minX, maxX, minY, maxY, ratio)
-        self.__order = []
+    def __init__(self, minX, maxX, minY, maxY, ratio, offset):
+        # call base class constructor
+        super().__init__(0, 0, minX, maxX, minY, maxY, ratio, offset)
         self.__status = Status.NotReady
-        self.ilosc_klientow = random.randint(1,3)
-        self.guest1 = self.getGuest()
-        self.guest2 = self.getGuest()
-        self.guest3 = self.getGuest()
-        self.ksiazka = self.__loadImg('./images/ksiazka.png')
-        self.stol = self.__loadImg('./images/stol.png')
-        self.check = self.__loadImg('./images/check.png')
-        self.plate = self.__loadImg('./images/plate.png')
-        self.Offset = 100
-
-    #sets table color based on it's status
-    def getColor(self):
-        color = None
-        if self.__status == Status.NotReady:
-            color = self.__loadImg('./images/stol.png')
-        elif self.__status == Status.Ready:
-            color = self.__loadImg('./images/kelner.png')
-        elif self.__status == Status.Waiting:
-            color = self.__loadImg('./images/kelner.png')
-        elif self.__status == Status.Served:
-            color = self.__loadImg('./images/kelner.png')
-        return color
-
-    def getGuest(self):
-        guest = None
-        i = random.randint(1,3)
-        if i == 1:
-            guest = self.__loadImg('./images/wiking_blond.png')
-        elif i == 2:
-            guest = self.__loadImg('./images/wiking_rudy.png')
-        elif i == 3:
-            guest = self.__loadImg('./images/wiking_rudy2.png')
-        return guest
-
-    def __loadImg(self, filePath):
-        return pygame.transform.scale((pygame.image.load(filePath)),(140,140))
-
-    def draw(self, screen):
-        screen.blit(self.stol, (self.getX() * 100-20+self.Offset, self.getY() * 100-20+self.Offset))
-        if self.ilosc_klientow == 1:
-            screen.blit(self.guest1, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 60+self.Offset))
-        elif self.ilosc_klientow == 2:
-            screen.blit(self.guest1, (self.getX() * 100 - 62+self.Offset, self.getY() * 100 - 60+self.Offset))
-            screen.blit(self.guest2, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 60+self.Offset))
-        elif self.ilosc_klientow == 3:
-            screen.blit(self.guest1, (self.getX() * 100 - 62+self.Offset, self.getY() * 100 - 60+self.Offset))
-            screen.blit(self.guest2, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 60+self.Offset))
-            screen.blit(self.guest3, (self.getX() * 100 + 22+self.Offset, self.getY() * 100 - 60+self.Offset))
-
-        if self.__status == Status.NotReady:
-            screen.blit(self.ksiazka, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 20+self.Offset))
-        elif self.__status == Status.Ready:
-            screen.blit(self.check, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 20+self.Offset))
-        elif self.__status == Status.Waiting:
-            if self.ilosc_klientow == 1:
-                screen.blit(self.plate, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 20+self.Offset))
-            elif self.ilosc_klientow == 2:
-                screen.blit(self.plate, (self.getX() * 100 - 62+self.Offset, self.getY() * 100 - 20+self.Offset))
-                screen.blit(self.plate, (self.getX() * 100 - 20+self.Offset, self.getY() * 100 - 20+self.Offset))
-            elif self.ilosc_klientow == 3:
-                screen.blit(self.plate, (self.getX() * 100 - 62+self.Offset, self.getY() * 100 - 20+self.Offset))
-                screen.blit(self.plate, (self.getX() * 100- 20+self.Offset, self.getY() * 100 - 20+self.Offset))
-                screen.blit(self.plate, (self.getX() * 100+ 22+self.Offset, self.getY() * 100 - 20+self.Offset))
+        self.__order = []
+        self.__guests = self.__getRandomGuests()
 
+    def __getRandomGuests(self):
+        possibleGuests = [Images.Guest1, Images.Guest2, Images.Guest3]
+        guests = []
+        guestCount = random.randint(1, len(possibleGuests))
+        for _ in range(guestCount):
+            guests.insert(0, possibleGuests[random.randint(0, len(possibleGuests) - 1)])
+        return guests
 
     def setOrder(self, order):
         self.__order = order
@@ -90,9 +44,57 @@ class Table(Drawable):
     def setStatus(self, status):
         self.__status = status
 
-#status of the table
-class Status(Enum):
-    NotReady = 0
-    Ready    = 1
-    Waiting  = 2
-    Served   = 3
+    def __getImage(self, imageKind):
+        if imageKind in [Images.Guest1, Images.Guest2, Images.Guest3, Images.Plate]:
+            size = int(self.getCellSize() / 3)
+        else:
+            size = int(1.4 * self.getCellSize())
+        return ImageCache.getInstance().getImage(imageKind, size, size)
+
+    # draws only table
+    def draw(self, screen):
+        xBase = self.getX() * self.getCellSize() + self.getOffset()
+        yBase = self.getY() * self.getCellSize() + self.getOffset()
+        tableXYOffset = int(0.2 * self.getCellSize())
+        screen.blit(self.__getImage(Images.Table), (xBase - tableXYOffset, yBase - tableXYOffset))
+
+    # draws images related to the status of a table
+    # the method is called in the second turn when all tables are already painted
+    def drawAux(self, screen):
+        xBase = self.getX() * self.getCellSize() + self.getOffset()
+        yBase = self.getY() * self.getCellSize() + self.getOffset()
+
+        guest1XOffset = 0
+        guest2XOffset = int((1 / 3) * self.getCellSize())
+        guest3XOffset = int((2 / 3) * self.getCellSize())
+        guest4XOffset = int((1 / 9) * self.getCellSize())
+        guest5XOffset = int((5 / 9) * self.getCellSize())
+        guestsYOffset = int(0.1 * self.getCellSize())
+        tableXYOffset = int(0.2 * self.getCellSize())
+
+        if len(self.__guests) == 1:
+            screen.blit(self.__getImage(self.__guests[0]), (xBase + guest2XOffset, yBase - guestsYOffset))
+        elif len(self.__guests) == 2:
+            screen.blit(self.__getImage(self.__guests[0]), (xBase + guest4XOffset, yBase - guestsYOffset))
+            screen.blit(self.__getImage(self.__guests[1]), (xBase + guest5XOffset, yBase - guestsYOffset))
+        elif len(self.__guests) == 3:
+            screen.blit(self.__getImage(self.__guests[0]), (xBase + guest1XOffset, yBase - guestsYOffset))
+            screen.blit(self.__getImage(self.__guests[1]), (xBase + guest2XOffset, yBase - guestsYOffset))
+            screen.blit(self.__getImage(self.__guests[2]), (xBase + guest3XOffset, yBase - guestsYOffset))
+
+        if self.isStatus(Status.NotReady):
+            screen.blit(self.__getImage(Images.Menu), (xBase - tableXYOffset, yBase - tableXYOffset))
+        elif self.isStatus(Status.Ready):
+            screen.blit(self.__getImage(Images.Check), (xBase - tableXYOffset, yBase - tableXYOffset))
+        elif self.isStatus(Status.Waiting):
+            platesYOffset = int(0.3 * self.getCellSize())
+            imagePlate = self.__getImage(Images.Plate)
+            if len(self.__guests) == 1:
+                screen.blit(imagePlate, (xBase + guest2XOffset, yBase + platesYOffset))
+            elif len(self.__guests) == 2:
+                screen.blit(imagePlate, (xBase + guest4XOffset, yBase + platesYOffset))
+                screen.blit(imagePlate, (xBase + guest5XOffset, yBase + platesYOffset))
+            elif len(self.__guests) == 3:
+                screen.blit(imagePlate, (xBase + guest1XOffset, yBase + platesYOffset))
+                screen.blit(imagePlate, (xBase + guest2XOffset, yBase + platesYOffset))
+                screen.blit(imagePlate, (xBase + guest3XOffset, yBase + platesYOffset))

kelner/src/components/Waiter.py

@@ -1,15 +1,15 @@
-import pygame
-from .Drawable import Drawable
+from kelner.src.components.Drawable import Drawable
+from kelner.src.managers.ImageCache import ImageCache, Images
+
 
 class Waiter(Drawable):
 
-    def __init__(self, x, y, minX, maxX, minY, maxY, ratio):
-        #call base class constructor
-        Drawable.__init__(self, x, y, minX, maxX, minY, maxY, ratio)
-        self.__image = self.__loadImg('./images/kelner.png')
+    def __init__(self, x, y, minX, maxX, minY, maxY, ratio, offset):
+        # call base class constructor
+        super().__init__(x, y, minX, maxX, minY, maxY, ratio, offset)
         self.__acceptedOrders = []
-        self.Offset = 100
-
+        self.__currentPath = []
+        self.imageWaiter = ImageCache.getInstance().getImage(Images.Waiter, self.getCellSize(), self.getCellSize())
 
     def moveUp(self):
         if self.getY() > self.getMinY():
@@ -39,12 +39,20 @@ class Waiter(Drawable):
         else:
             return False
 
-    #accepts orders from the table and stores them in queue
+    # accepts orders from the table and stores them in queue
     def addOrder(self, table):
         self.__acceptedOrders += [(table, table.getOrder())]
 
-    def __loadImg(self, filePath):
-        return pygame.transform.scale((pygame.image.load(filePath)),(140,140))
+    def isPathEmpty(self):
+        return self.__currentPath == []
+
+    def setPath(self, path):
+        self.__currentPath = path
+
+    def popStepFromPath(self):
+        return self.__currentPath.pop(0)
 
     def draw(self, screen):
-        screen.blit(self.__image, (self.getX()*100-20+self.Offset, self.getY()*100-20+self.Offset))
+        xBase = self.getX() * self.getCellSize() + self.getOffset()
+        yBase = self.getY() * self.getCellSize() + self.getOffset()
+        screen.blit(self.imageWaiter, (xBase, yBase))

kelner/src/managers/DrawableCollection.py

@@ -1,22 +1,24 @@
 import random
-from src.components.Table import Table, Status
-from src.components.Waiter import Waiter
-import pygame
-#drawable objects manager
+from kelner.src.components.Table import Table, Status
+from kelner.src.components.Waiter import Waiter
+
+
+# drawable objects manager
 class DrawableCollection:
-    #const, minimal distance between objects
-    __MinDistance = 0
+    # const, minimal distance between objects
+    __MinDistanceX = 0
+    __MinDistanceY = 0
 
     def __init__(self):
-        #collection that holds all drawable objects
+        # collection that holds all drawable objects
+        self.__mustRepaint = True
         self.__drawables = []
-        self.image = pygame.transform.scale((pygame.image.load('./images/Backgroud.png')),(1700,1100))
 
-    #adds drawable objects to the collection
+    # adds drawable objects to the collection
     def add(self, drawable):
         self.__drawables.append(drawable)
 
-    #generates and sets random (x, y) and cheks if it's not occupied by other object
+    # generates and sets random (x, y) and cheks if it's not occupied by other object
     def generatePosition(self, drawable):
         isPositionUnique = False
         while not isPositionUnique:
@@ -24,20 +26,14 @@ class DrawableCollection:
             y = random.randint(drawable.getMinY() + 1, drawable.getMaxY() - 1)
             isPositionUnique = True
             for item in self.__drawables:
-                if abs(item.getX() - x) <= self.__MinDistance and abs(item.getY() - y) <= self.__MinDistance:
+                if abs(item.getX() - x) <= self.__MinDistanceX and abs(item.getY() - y) <= self.__MinDistanceY:
                     isPositionUnique = False
                     break
             if isPositionUnique:
                 drawable.setX(x)
                 drawable.setY(y)
 
-    #draws all objects stored in collection
-    def draw(self, screen):
-        screen.blit(self.image, (0, 0))
-        for item in self.__drawables:
-            item.draw(screen)
-
-    #checks if position (x,y) is not occupied by other object
+    # checks if position (x,y) is not occupied by other object
     def isPositionAvailable(self, x, y):
         isPositionAvailable = True
         for item in self.__drawables:
@@ -46,29 +42,56 @@ class DrawableCollection:
                 break
         return isPositionAvailable
 
-    #gets all tables by status from collection
+    # gets all tables by status from collection
     def getTables(self, status):
         result = []
         for item in self.__drawables:
-            if isinstance(item, Table) and item.isStatus(status):
+            if status is None or isinstance(item, Table) and item.isStatus(status):
                 result += [item]
         return result
 
-    #gets all waiters from collection
-    def getWaites(self):
+    # gets all waiters from collection
+    def getWaiters(self):
         result = []
         for item in self.__drawables:
             if isinstance(item, Waiter):
                 result += [item]
         return result
 
-    #waiter collects order from the nearest table
+    # waiter collects orders from all nearest tables
     def collectOrders(self):
-        waiters = self.getWaites()
+        waiters = self.getWaiters()
         for waiter in waiters:
             tables = self.getTables(Status.Ready)
             for table in tables:
                 if (table.getX() == waiter.getX() and abs(table.getY() - waiter.getY()) == 1) or (table.getY() == waiter.getY() and abs(table.getX() - waiter.getX()) == 1):
                     table.setStatus(Status.Waiting)
                     waiter.addOrder(table)
-                    table.delOrder()
+                    table.delOrder()
+
+    # returns table: 0 - position is available, 1 - position is occupied
+    def getReservedPlaces(self, waiter):
+        cols = waiter.getMaxX() - waiter.getMinX() + 1
+        rows = waiter.getMaxY() - waiter.getMinY() + 1
+        reservedPlaces = [[0] * cols for i in range(rows)]
+        tables = self.getTables(None)
+        if tables:
+            for table in tables:
+                reservedPlaces[table.getY()][table.getX()] = 1
+        return reservedPlaces
+
+    # the method is called externally and forces repainting
+    def forceRepaint(self):
+        self.__mustRepaint = True
+
+    # returns boolean value: True if objects should be repainted otherwise False
+    def mustRepaint(self):
+        return self.__mustRepaint
+
+    # draws all objects stored in collection
+    def draw(self, screen):
+        for item in self.__drawables:
+            item.draw(screen)
+        for item in self.__drawables:
+            item.drawAux(screen)
+        self.__mustRepaint = False

kelner/src/managers/ImageCache.py

@@ -0,0 +1,58 @@
+import pygame
+from enum import Enum
+
+
+# images enum
+class Images(Enum):
+    Background = 0
+    Waiter = 1
+    Table = 2
+    Menu = 3
+    Check = 4
+    Plate = 5
+    Guest1 = 6
+    Guest2 = 7
+    Guest3 = 8
+
+
+class ImageCache:
+    __instance = None
+
+    @staticmethod
+    def getInstance():
+        if ImageCache.__instance is None:
+            ImageCache()
+        return ImageCache.__instance
+
+    def __init__(self):
+        """ Virtually private constructor. """
+        if ImageCache.__instance is not None:
+            raise Exception("This class is a singleton!")
+        else:
+            ImageCache.__instance = self
+            self.__images = {}
+            self.__paths = {Images.Background: './images/Backgroud.png',
+                            Images.Waiter:     './images/kelner.png',
+                            Images.Table:      './images/stol.png',
+                            Images.Menu:       './images/ksiazka.png',
+                            Images.Check:      './images/check.png',
+                            Images.Plate:      './images/plate.png',
+                            Images.Guest1:     './images/wiking_blond.png',
+                            Images.Guest2:     './images/wiking_rudy.png',
+                            Images.Guest3:     './images/wiking_rudy2.png',
+                            Images.Waiter_U:     './images/Kelnerka/kelner_full_U.png',
+                            Images.Waiter_RU:     './images/Kelnerka/kelner_full_RU.png',
+                            Images.Waiter_R:     './images/Kelnerka/kelner_full_R.png',
+                            Images.Waiter_RD:     './images/Kelnerka/kelner_full_RD.png',
+                            Images.Waiter_D:     './images/Kelnerka/kelner_full_D.png',
+                            Images.Waiter_LD:     './images/Kelnerka/kelner_full_LD.png',
+                            Images.Waiter_L:     './images/Kelnerka/kelner_full_L.png',
+                            Images.Waiter_LU:     './images/Kelnerka/kelner_full_LU.png'}
+
+    def getImage(self, imageKind, width, height):
+        key = str(imageKind.value) + ':' + str(width) + ':' + str(height)
+        image = self.__images.get(key, None)
+        if image is None:
+            image = pygame.transform.scale((pygame.image.load(self.__paths[imageKind])), (width, height))
+            self.__images[key] = image
+        return image

kelner/src/managers/MenuManager.py

@@ -1,9 +1,10 @@
 import random
 
-#contains all dishes and generates random order for the table
+
+# contains all dishes and generates random order for the table
 class MenuManager:
 
-    #consts, min and max dishes oredered by the people sitting by the same table
+    # consts, min and max dishes ordered by the people sitting by the same table
     __MinDishes = 1
     __MaxDishes = 3
 
@@ -24,10 +25,11 @@ class MenuManager:
                            "EMPTY PLATE",
                            "BEER",
                            "CAKE"]
-    #generator
+
+    # generator
     def generateOrder(self):
         count = random.randint(self.__MinDishes, self.__MaxDishes)
         order = []
         for i in range(0, count):
             order += [(self.__menuCard[random.randint(0, len(self.__menuCard) - 1)])]
-        return order
+        return order

kelner/src/managers/TableManager.py

@@ -0,0 +1,29 @@
+import threading
+import time
+import random
+from kelner.src.components.Table import Status
+
+
+# creates new thread
+class TableManager (threading.Thread):
+
+    def __init__(self, drawableManager, menuManager):
+        super().__init__()
+        self.__drawableManager = drawableManager
+        self.__menuManager = menuManager
+        self.__runThread = True
+
+    # changes the status of a random table from NotReady to Ready
+    def run(self):
+        while self.__runThread:
+            tables = self.__drawableManager.getTables(Status.NotReady)
+            if tables:
+                tableIndex = random.randint(0, len(tables) - 1)
+                table = tables[tableIndex]
+                time.sleep(3)
+                table.setStatus(Status.Ready)
+                table.setOrder(self.__menuManager.generateOrder())
+                self.__drawableManager.forceRepaint()
+
+    def stop(self):
+        self.__runThread = False

kelner/src/managers/WaiterManager.py

@@ -0,0 +1,59 @@
+import threading
+import time
+import sys
+from kelner.src.components.Table import Status
+from kelner.src.algorithms.AStar.Finder import Finder
+from kelner.src.managers.ImageCache import ImageCache, Images
+
+# creates new thread
+class WaiterManager (threading.Thread):
+
+    def __init__(self, drawableManager):
+        super().__init__()
+        self.__drawableManager = drawableManager
+        self.__runThread = True
+
+    def __getNearestTargetPath(self, waiter):
+        distance = sys.maxsize
+        nearestTargetPath = None
+        tables = self.__drawableManager.getTables(Status.Ready)
+        if tables:
+            reservedPlaces = self.__drawableManager.getReservedPlaces(waiter)
+            finder = Finder(reservedPlaces)
+            origin = (waiter.getX(), waiter.getY())
+            for table in tables:
+                targets = finder.getNeighbours((table.getX(), table.getY()), False)
+                for target in targets:
+                    if target is not None:
+                        path = finder.getPath(origin, target, True)
+                        if path:
+                            result = len(path)
+                            if result < distance:
+                                distance = result
+                                nearestTargetPath = path
+        return nearestTargetPath
+
+    # changes the status of a random table from NotReady to Ready
+    def run(self):
+        while self.__runThread:
+            waiters = self.__drawableManager.getWaiters()
+            if waiters:
+                for waiter in waiters:
+                    path = self.__getNearestTargetPath(waiter)
+                    if path is not None:
+                        waiter.setPath(path)
+                    if not waiter.isPathEmpty():
+                        step = waiter.popStepFromPath()
+
+
+                        time.sleep(0.4)
+                        waiter.setX(step[0])
+                        waiter.setY(step[1])
+                        self.__drawableManager.forceRepaint()
+                        if waiter.isPathEmpty():
+                            time.sleep(2)
+                            self.__drawableManager.collectOrders()
+                            self.__drawableManager.forceRepaint()
+
+    def stop(self):
+        self.__runThread = False

kelner/venv/Include/site/python3.7/pygame/pygame.h

@@ -1,34 +0,0 @@
-/*
-    pygame - Python Game Library
-    Copyright (C) 2000-2001  Pete Shinners
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-    Pete Shinners
-    pete@shinners.org
-*/
-
-/* To allow the Pygame C api to be globally shared by all code within an
- * extension module built from multiple C files,  only include the pygame.h
- * header within the top level C file, the one which calls the
- * 'import_pygame_*' macros. All other C source files of the module should
- * include _pygame.h instead. 
- */
-#ifndef PYGAME_H
-#define PYGAME_H
-
-#include "_pygame.h"
-
-#endif

kelner/venv/Lib/site-packages/easy-install.pth

@@ -1,2 +0,0 @@
-./setuptools-40.8.0-py3.7.egg
-./pip-19.0.3-py3.7.egg

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/PKG-INFO

@@ -1,73 +0,0 @@
-Metadata-Version: 1.2
-Name: pip
-Version: 19.0.3
-Summary: The PyPA recommended tool for installing Python packages.
-Home-page: https://pip.pypa.io/
-Author: The pip developers
-Author-email: pypa-dev@groups.google.com
-License: MIT
-Description: pip - The Python Package Installer
-        ==================================
-        
-        .. image:: https://img.shields.io/pypi/v/pip.svg
-           :target: https://pypi.org/project/pip/
-        
-        .. image:: https://readthedocs.org/projects/pip/badge/?version=latest
-           :target: https://pip.pypa.io/en/latest
-        
-        pip is the `package installer`_ for Python. You can use pip to install packages from the `Python Package Index`_ and other indexes.
-        
-        Please take a look at our documentation for how to install and use pip:
-        
-        * `Installation`_
-        * `Usage`_
-        * `Release notes`_
-        
-        If you find bugs, need help, or want to talk to the developers please use our mailing lists or chat rooms:
-        
-        * `Issue tracking`_
-        * `Discourse channel`_
-        * `User IRC`_
-        
-        If you want to get involved head over to GitHub to get the source code and feel free to jump on the developer mailing lists and chat rooms:
-        
-        * `GitHub page`_
-        * `Dev mailing list`_
-        * `Dev IRC`_
-        
-        Code of Conduct
-        ---------------
-        
-        Everyone interacting in the pip project's codebases, issue trackers, chat
-        rooms, and mailing lists is expected to follow the `PyPA Code of Conduct`_.
-        
-        .. _package installer: https://packaging.python.org/en/latest/current/
-        .. _Python Package Index: https://pypi.org
-        .. _Installation: https://pip.pypa.io/en/stable/installing.html
-        .. _Usage: https://pip.pypa.io/en/stable/
-        .. _Release notes: https://pip.pypa.io/en/stable/news.html
-        .. _GitHub page: https://github.com/pypa/pip
-        .. _Issue tracking: https://github.com/pypa/pip/issues
-        .. _Discourse channel: https://discuss.python.org/c/packaging
-        .. _Dev mailing list: https://groups.google.com/forum/#!forum/pypa-dev
-        .. _User IRC: https://webchat.freenode.net/?channels=%23pypa
-        .. _Dev IRC: https://webchat.freenode.net/?channels=%23pypa-dev
-        .. _PyPA Code of Conduct: https://www.pypa.io/en/latest/code-of-conduct/
-        
-Keywords: distutils easy_install egg setuptools wheel virtualenv
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: MIT License
-Classifier: Topic :: Software Development :: Build Tools
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Programming Language :: Python :: 3.7
-Classifier: Programming Language :: Python :: Implementation :: CPython
-Classifier: Programming Language :: Python :: Implementation :: PyPy
-Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/SOURCES.txt

@@ -1,391 +0,0 @@
-AUTHORS.txt
-LICENSE.txt
-MANIFEST.in
-NEWS.rst
-README.rst
-pyproject.toml
-setup.cfg
-setup.py
-docs/pip_sphinxext.py
-docs/html/conf.py
-docs/html/cookbook.rst
-docs/html/index.rst
-docs/html/installing.rst
-docs/html/logic.rst
-docs/html/news.rst
-docs/html/quickstart.rst
-docs/html/usage.rst
-docs/html/user_guide.rst
-docs/html/development/configuration.rst
-docs/html/development/contributing.rst
-docs/html/development/getting-started.rst
-docs/html/development/index.rst
-docs/html/development/release-process.rst
-docs/html/development/vendoring-policy.rst
-docs/html/reference/index.rst
-docs/html/reference/pip.rst
-docs/html/reference/pip_check.rst
-docs/html/reference/pip_config.rst
-docs/html/reference/pip_download.rst
-docs/html/reference/pip_freeze.rst
-docs/html/reference/pip_hash.rst
-docs/html/reference/pip_install.rst
-docs/html/reference/pip_list.rst
-docs/html/reference/pip_search.rst
-docs/html/reference/pip_show.rst
-docs/html/reference/pip_uninstall.rst
-docs/html/reference/pip_wheel.rst
-docs/man/index.rst
-docs/man/commands/check.rst
-docs/man/commands/config.rst
-docs/man/commands/download.rst
-docs/man/commands/freeze.rst
-docs/man/commands/hash.rst
-docs/man/commands/help.rst
-docs/man/commands/install.rst
-docs/man/commands/list.rst
-docs/man/commands/search.rst
-docs/man/commands/show.rst
-docs/man/commands/uninstall.rst
-docs/man/commands/wheel.rst
-src/pip/__init__.py
-src/pip/__main__.py
-src/pip.egg-info/PKG-INFO
-src/pip.egg-info/SOURCES.txt
-src/pip.egg-info/dependency_links.txt
-src/pip.egg-info/entry_points.txt
-src/pip.egg-info/not-zip-safe
-src/pip.egg-info/top_level.txt
-src/pip/_internal/__init__.py
-src/pip/_internal/build_env.py
-src/pip/_internal/cache.py
-src/pip/_internal/configuration.py
-src/pip/_internal/download.py
-src/pip/_internal/exceptions.py
-src/pip/_internal/index.py
-src/pip/_internal/locations.py
-src/pip/_internal/pep425tags.py
-src/pip/_internal/pyproject.py
-src/pip/_internal/resolve.py
-src/pip/_internal/wheel.py
-src/pip/_internal/cli/__init__.py
-src/pip/_internal/cli/autocompletion.py
-src/pip/_internal/cli/base_command.py
-src/pip/_internal/cli/cmdoptions.py
-src/pip/_internal/cli/main_parser.py
-src/pip/_internal/cli/parser.py
-src/pip/_internal/cli/status_codes.py
-src/pip/_internal/commands/__init__.py
-src/pip/_internal/commands/check.py
-src/pip/_internal/commands/completion.py
-src/pip/_internal/commands/configuration.py
-src/pip/_internal/commands/download.py
-src/pip/_internal/commands/freeze.py
-src/pip/_internal/commands/hash.py
-src/pip/_internal/commands/help.py
-src/pip/_internal/commands/install.py
-src/pip/_internal/commands/list.py
-src/pip/_internal/commands/search.py
-src/pip/_internal/commands/show.py
-src/pip/_internal/commands/uninstall.py
-src/pip/_internal/commands/wheel.py
-src/pip/_internal/models/__init__.py
-src/pip/_internal/models/candidate.py
-src/pip/_internal/models/format_control.py
-src/pip/_internal/models/index.py
-src/pip/_internal/models/link.py
-src/pip/_internal/operations/__init__.py
-src/pip/_internal/operations/check.py
-src/pip/_internal/operations/freeze.py
-src/pip/_internal/operations/prepare.py
-src/pip/_internal/req/__init__.py
-src/pip/_internal/req/constructors.py
-src/pip/_internal/req/req_file.py
-src/pip/_internal/req/req_install.py
-src/pip/_internal/req/req_set.py
-src/pip/_internal/req/req_tracker.py
-src/pip/_internal/req/req_uninstall.py
-src/pip/_internal/utils/__init__.py
-src/pip/_internal/utils/appdirs.py
-src/pip/_internal/utils/compat.py
-src/pip/_internal/utils/deprecation.py
-src/pip/_internal/utils/encoding.py
-src/pip/_internal/utils/filesystem.py
-src/pip/_internal/utils/glibc.py
-src/pip/_internal/utils/hashes.py
-src/pip/_internal/utils/logging.py
-src/pip/_internal/utils/misc.py
-src/pip/_internal/utils/models.py
-src/pip/_internal/utils/outdated.py
-src/pip/_internal/utils/packaging.py
-src/pip/_internal/utils/setuptools_build.py
-src/pip/_internal/utils/temp_dir.py
-src/pip/_internal/utils/typing.py
-src/pip/_internal/utils/ui.py
-src/pip/_internal/vcs/__init__.py
-src/pip/_internal/vcs/bazaar.py
-src/pip/_internal/vcs/git.py
-src/pip/_internal/vcs/mercurial.py
-src/pip/_internal/vcs/subversion.py
-src/pip/_vendor/README.rst
-src/pip/_vendor/__init__.py
-src/pip/_vendor/appdirs.LICENSE.txt
-src/pip/_vendor/appdirs.py
-src/pip/_vendor/distro.LICENSE
-src/pip/_vendor/distro.py
-src/pip/_vendor/ipaddress.LICENSE
-src/pip/_vendor/ipaddress.py
-src/pip/_vendor/pyparsing.LICENSE
-src/pip/_vendor/pyparsing.py
-src/pip/_vendor/retrying.LICENSE
-src/pip/_vendor/retrying.py
-src/pip/_vendor/six.LICENSE
-src/pip/_vendor/six.py
-src/pip/_vendor/vendor.txt
-src/pip/_vendor/cachecontrol/LICENSE.txt
-src/pip/_vendor/cachecontrol/__init__.py
-src/pip/_vendor/cachecontrol/_cmd.py
-src/pip/_vendor/cachecontrol/adapter.py
-src/pip/_vendor/cachecontrol/cache.py
-src/pip/_vendor/cachecontrol/compat.py
-src/pip/_vendor/cachecontrol/controller.py
-src/pip/_vendor/cachecontrol/filewrapper.py
-src/pip/_vendor/cachecontrol/heuristics.py
-src/pip/_vendor/cachecontrol/serialize.py
-src/pip/_vendor/cachecontrol/wrapper.py
-src/pip/_vendor/cachecontrol/caches/__init__.py
-src/pip/_vendor/cachecontrol/caches/file_cache.py
-src/pip/_vendor/cachecontrol/caches/redis_cache.py
-src/pip/_vendor/certifi/LICENSE
-src/pip/_vendor/certifi/__init__.py
-src/pip/_vendor/certifi/__main__.py
-src/pip/_vendor/certifi/cacert.pem
-src/pip/_vendor/certifi/core.py
-src/pip/_vendor/chardet/LICENSE
-src/pip/_vendor/chardet/__init__.py
-src/pip/_vendor/chardet/big5freq.py
-src/pip/_vendor/chardet/big5prober.py
-src/pip/_vendor/chardet/chardistribution.py
-src/pip/_vendor/chardet/charsetgroupprober.py
-src/pip/_vendor/chardet/charsetprober.py
-src/pip/_vendor/chardet/codingstatemachine.py
-src/pip/_vendor/chardet/compat.py
-src/pip/_vendor/chardet/cp949prober.py
-src/pip/_vendor/chardet/enums.py
-src/pip/_vendor/chardet/escprober.py
-src/pip/_vendor/chardet/escsm.py
-src/pip/_vendor/chardet/eucjpprober.py
-src/pip/_vendor/chardet/euckrfreq.py
-src/pip/_vendor/chardet/euckrprober.py
-src/pip/_vendor/chardet/euctwfreq.py
-src/pip/_vendor/chardet/euctwprober.py
-src/pip/_vendor/chardet/gb2312freq.py
-src/pip/_vendor/chardet/gb2312prober.py
-src/pip/_vendor/chardet/hebrewprober.py
-src/pip/_vendor/chardet/jisfreq.py
-src/pip/_vendor/chardet/jpcntx.py
-src/pip/_vendor/chardet/langbulgarianmodel.py
-src/pip/_vendor/chardet/langcyrillicmodel.py
-src/pip/_vendor/chardet/langgreekmodel.py
-src/pip/_vendor/chardet/langhebrewmodel.py
-src/pip/_vendor/chardet/langhungarianmodel.py
-src/pip/_vendor/chardet/langthaimodel.py
-src/pip/_vendor/chardet/langturkishmodel.py
-src/pip/_vendor/chardet/latin1prober.py
-src/pip/_vendor/chardet/mbcharsetprober.py
-src/pip/_vendor/chardet/mbcsgroupprober.py
-src/pip/_vendor/chardet/mbcssm.py
-src/pip/_vendor/chardet/sbcharsetprober.py
-src/pip/_vendor/chardet/sbcsgroupprober.py
-src/pip/_vendor/chardet/sjisprober.py
-src/pip/_vendor/chardet/universaldetector.py
-src/pip/_vendor/chardet/utf8prober.py
-src/pip/_vendor/chardet/version.py
-src/pip/_vendor/chardet/cli/__init__.py
-src/pip/_vendor/chardet/cli/chardetect.py
-src/pip/_vendor/colorama/LICENSE.txt
-src/pip/_vendor/colorama/__init__.py
-src/pip/_vendor/colorama/ansi.py
-src/pip/_vendor/colorama/ansitowin32.py
-src/pip/_vendor/colorama/initialise.py
-src/pip/_vendor/colorama/win32.py
-src/pip/_vendor/colorama/winterm.py
-src/pip/_vendor/distlib/LICENSE.txt
-src/pip/_vendor/distlib/__init__.py
-src/pip/_vendor/distlib/compat.py
-src/pip/_vendor/distlib/database.py
-src/pip/_vendor/distlib/index.py
-src/pip/_vendor/distlib/locators.py
-src/pip/_vendor/distlib/manifest.py
-src/pip/_vendor/distlib/markers.py
-src/pip/_vendor/distlib/metadata.py
-src/pip/_vendor/distlib/resources.py
-src/pip/_vendor/distlib/scripts.py
-src/pip/_vendor/distlib/t32.exe
-src/pip/_vendor/distlib/t64.exe
-src/pip/_vendor/distlib/util.py
-src/pip/_vendor/distlib/version.py
-src/pip/_vendor/distlib/w32.exe
-src/pip/_vendor/distlib/w64.exe
-src/pip/_vendor/distlib/wheel.py
-src/pip/_vendor/distlib/_backport/__init__.py
-src/pip/_vendor/distlib/_backport/misc.py
-src/pip/_vendor/distlib/_backport/shutil.py
-src/pip/_vendor/distlib/_backport/sysconfig.cfg
-src/pip/_vendor/distlib/_backport/sysconfig.py
-src/pip/_vendor/distlib/_backport/tarfile.py
-src/pip/_vendor/html5lib/LICENSE
-src/pip/_vendor/html5lib/__init__.py
-src/pip/_vendor/html5lib/_ihatexml.py
-src/pip/_vendor/html5lib/_inputstream.py
-src/pip/_vendor/html5lib/_tokenizer.py
-src/pip/_vendor/html5lib/_utils.py
-src/pip/_vendor/html5lib/constants.py
-src/pip/_vendor/html5lib/html5parser.py
-src/pip/_vendor/html5lib/serializer.py
-src/pip/_vendor/html5lib/_trie/__init__.py
-src/pip/_vendor/html5lib/_trie/_base.py
-src/pip/_vendor/html5lib/_trie/datrie.py
-src/pip/_vendor/html5lib/_trie/py.py
-src/pip/_vendor/html5lib/filters/__init__.py
-src/pip/_vendor/html5lib/filters/alphabeticalattributes.py
-src/pip/_vendor/html5lib/filters/base.py
-src/pip/_vendor/html5lib/filters/inject_meta_charset.py
-src/pip/_vendor/html5lib/filters/lint.py
-src/pip/_vendor/html5lib/filters/optionaltags.py
-src/pip/_vendor/html5lib/filters/sanitizer.py
-src/pip/_vendor/html5lib/filters/whitespace.py
-src/pip/_vendor/html5lib/treeadapters/__init__.py
-src/pip/_vendor/html5lib/treeadapters/genshi.py
-src/pip/_vendor/html5lib/treeadapters/sax.py
-src/pip/_vendor/html5lib/treebuilders/__init__.py
-src/pip/_vendor/html5lib/treebuilders/base.py
-src/pip/_vendor/html5lib/treebuilders/dom.py
-src/pip/_vendor/html5lib/treebuilders/etree.py
-src/pip/_vendor/html5lib/treebuilders/etree_lxml.py
-src/pip/_vendor/html5lib/treewalkers/__init__.py
-src/pip/_vendor/html5lib/treewalkers/base.py
-src/pip/_vendor/html5lib/treewalkers/dom.py
-src/pip/_vendor/html5lib/treewalkers/etree.py
-src/pip/_vendor/html5lib/treewalkers/etree_lxml.py
-src/pip/_vendor/html5lib/treewalkers/genshi.py
-src/pip/_vendor/idna/LICENSE.rst
-src/pip/_vendor/idna/__init__.py
-src/pip/_vendor/idna/codec.py
-src/pip/_vendor/idna/compat.py
-src/pip/_vendor/idna/core.py
-src/pip/_vendor/idna/idnadata.py
-src/pip/_vendor/idna/intranges.py
-src/pip/_vendor/idna/package_data.py
-src/pip/_vendor/idna/uts46data.py
-src/pip/_vendor/lockfile/LICENSE
-src/pip/_vendor/lockfile/__init__.py
-src/pip/_vendor/lockfile/linklockfile.py
-src/pip/_vendor/lockfile/mkdirlockfile.py
-src/pip/_vendor/lockfile/pidlockfile.py
-src/pip/_vendor/lockfile/sqlitelockfile.py
-src/pip/_vendor/lockfile/symlinklockfile.py
-src/pip/_vendor/msgpack/COPYING
-src/pip/_vendor/msgpack/__init__.py
-src/pip/_vendor/msgpack/_version.py
-src/pip/_vendor/msgpack/exceptions.py
-src/pip/_vendor/msgpack/fallback.py
-src/pip/_vendor/packaging/LICENSE
-src/pip/_vendor/packaging/LICENSE.APACHE
-src/pip/_vendor/packaging/LICENSE.BSD
-src/pip/_vendor/packaging/__about__.py
-src/pip/_vendor/packaging/__init__.py
-src/pip/_vendor/packaging/_compat.py
-src/pip/_vendor/packaging/_structures.py
-src/pip/_vendor/packaging/markers.py
-src/pip/_vendor/packaging/requirements.py
-src/pip/_vendor/packaging/specifiers.py
-src/pip/_vendor/packaging/utils.py
-src/pip/_vendor/packaging/version.py
-src/pip/_vendor/pep517/LICENSE
-src/pip/_vendor/pep517/__init__.py
-src/pip/_vendor/pep517/_in_process.py
-src/pip/_vendor/pep517/build.py
-src/pip/_vendor/pep517/check.py
-src/pip/_vendor/pep517/colorlog.py
-src/pip/_vendor/pep517/compat.py
-src/pip/_vendor/pep517/envbuild.py
-src/pip/_vendor/pep517/wrappers.py
-src/pip/_vendor/pkg_resources/LICENSE
-src/pip/_vendor/pkg_resources/__init__.py
-src/pip/_vendor/pkg_resources/py31compat.py
-src/pip/_vendor/progress/LICENSE
-src/pip/_vendor/progress/__init__.py
-src/pip/_vendor/progress/bar.py
-src/pip/_vendor/progress/counter.py
-src/pip/_vendor/progress/helpers.py
-src/pip/_vendor/progress/spinner.py
-src/pip/_vendor/pytoml/LICENSE
-src/pip/_vendor/pytoml/__init__.py
-src/pip/_vendor/pytoml/core.py
-src/pip/_vendor/pytoml/parser.py
-src/pip/_vendor/pytoml/test.py
-src/pip/_vendor/pytoml/utils.py
-src/pip/_vendor/pytoml/writer.py
-src/pip/_vendor/requests/LICENSE
-src/pip/_vendor/requests/__init__.py
-src/pip/_vendor/requests/__version__.py
-src/pip/_vendor/requests/_internal_utils.py
-src/pip/_vendor/requests/adapters.py
-src/pip/_vendor/requests/api.py
-src/pip/_vendor/requests/auth.py
-src/pip/_vendor/requests/certs.py
-src/pip/_vendor/requests/compat.py
-src/pip/_vendor/requests/cookies.py
-src/pip/_vendor/requests/exceptions.py
-src/pip/_vendor/requests/help.py
-src/pip/_vendor/requests/hooks.py
-src/pip/_vendor/requests/models.py
-src/pip/_vendor/requests/packages.py
-src/pip/_vendor/requests/sessions.py
-src/pip/_vendor/requests/status_codes.py
-src/pip/_vendor/requests/structures.py
-src/pip/_vendor/requests/utils.py
-src/pip/_vendor/urllib3/LICENSE.txt
-src/pip/_vendor/urllib3/__init__.py
-src/pip/_vendor/urllib3/_collections.py
-src/pip/_vendor/urllib3/connection.py
-src/pip/_vendor/urllib3/connectionpool.py
-src/pip/_vendor/urllib3/exceptions.py
-src/pip/_vendor/urllib3/fields.py
-src/pip/_vendor/urllib3/filepost.py
-src/pip/_vendor/urllib3/poolmanager.py
-src/pip/_vendor/urllib3/request.py
-src/pip/_vendor/urllib3/response.py
-src/pip/_vendor/urllib3/contrib/__init__.py
-src/pip/_vendor/urllib3/contrib/_appengine_environ.py
-src/pip/_vendor/urllib3/contrib/appengine.py
-src/pip/_vendor/urllib3/contrib/ntlmpool.py
-src/pip/_vendor/urllib3/contrib/pyopenssl.py
-src/pip/_vendor/urllib3/contrib/securetransport.py
-src/pip/_vendor/urllib3/contrib/socks.py
-src/pip/_vendor/urllib3/contrib/_securetransport/__init__.py
-src/pip/_vendor/urllib3/contrib/_securetransport/bindings.py
-src/pip/_vendor/urllib3/contrib/_securetransport/low_level.py
-src/pip/_vendor/urllib3/packages/__init__.py
-src/pip/_vendor/urllib3/packages/six.py
-src/pip/_vendor/urllib3/packages/backports/__init__.py
-src/pip/_vendor/urllib3/packages/backports/makefile.py
-src/pip/_vendor/urllib3/packages/ssl_match_hostname/__init__.py
-src/pip/_vendor/urllib3/packages/ssl_match_hostname/_implementation.py
-src/pip/_vendor/urllib3/util/__init__.py
-src/pip/_vendor/urllib3/util/connection.py
-src/pip/_vendor/urllib3/util/queue.py
-src/pip/_vendor/urllib3/util/request.py
-src/pip/_vendor/urllib3/util/response.py
-src/pip/_vendor/urllib3/util/retry.py
-src/pip/_vendor/urllib3/util/ssl_.py
-src/pip/_vendor/urllib3/util/timeout.py
-src/pip/_vendor/urllib3/util/url.py
-src/pip/_vendor/urllib3/util/wait.py
-src/pip/_vendor/webencodings/LICENSE
-src/pip/_vendor/webencodings/__init__.py
-src/pip/_vendor/webencodings/labels.py
-src/pip/_vendor/webencodings/mklabels.py
-src/pip/_vendor/webencodings/tests.py
-src/pip/_vendor/webencodings/x_user_defined.py

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/dependency_links.txt

@@ -1 +0,0 @@
-

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/entry_points.txt

@@ -1,5 +0,0 @@
-[console_scripts]
-pip = pip._internal:main
-pip3 = pip._internal:main
-pip3.7 = pip._internal:main
-

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/not-zip-safe

@@ -1 +0,0 @@
-

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/EGG-INFO/top_level.txt

@@ -1 +0,0 @@
-pip

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/__init__.py

@@ -1 +0,0 @@
-__version__ = "19.0.3"

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/__main__.py

@@ -1,19 +0,0 @@
-from __future__ import absolute_import
-
-import os
-import sys
-
-# If we are running from a wheel, add the wheel to sys.path
-# This allows the usage python pip-*.whl/pip install pip-*.whl
-if __package__ == '':
-    # __file__ is pip-*.whl/pip/__main__.py
-    # first dirname call strips of '/__main__.py', second strips off '/pip'
-    # Resulting path is the name of the wheel itself
-    # Add that to sys.path so we can import pip
-    path = os.path.dirname(os.path.dirname(__file__))
-    sys.path.insert(0, path)
-
-from pip._internal import main as _main  # isort:skip # noqa
-
-if __name__ == '__main__':
-    sys.exit(_main())

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/__init__.py

@@ -1,78 +0,0 @@
-#!/usr/bin/env python
-from __future__ import absolute_import
-
-import locale
-import logging
-import os
-import warnings
-
-import sys
-
-# 2016-06-17 barry@debian.org: urllib3 1.14 added optional support for socks,
-# but if invoked (i.e. imported), it will issue a warning to stderr if socks
-# isn't available.  requests unconditionally imports urllib3's socks contrib
-# module, triggering this warning.  The warning breaks DEP-8 tests (because of
-# the stderr output) and is just plain annoying in normal usage.  I don't want
-# to add socks as yet another dependency for pip, nor do I want to allow-stder
-# in the DEP-8 tests, so just suppress the warning.  pdb tells me this has to
-# be done before the import of pip.vcs.
-from pip._vendor.urllib3.exceptions import DependencyWarning
-warnings.filterwarnings("ignore", category=DependencyWarning)  # noqa
-
-# We want to inject the use of SecureTransport as early as possible so that any
-# references or sessions or what have you are ensured to have it, however we
-# only want to do this in the case that we're running on macOS and the linked
-# OpenSSL is too old to handle TLSv1.2
-try:
-    import ssl
-except ImportError:
-    pass
-else:
-    # Checks for OpenSSL 1.0.1 on MacOS
-    if sys.platform == "darwin" and ssl.OPENSSL_VERSION_NUMBER < 0x1000100f:
-        try:
-            from pip._vendor.urllib3.contrib import securetransport
-        except (ImportError, OSError):
-            pass
-        else:
-            securetransport.inject_into_urllib3()
-
-from pip._internal.cli.autocompletion import autocomplete
-from pip._internal.cli.main_parser import parse_command
-from pip._internal.commands import commands_dict
-from pip._internal.exceptions import PipError
-from pip._internal.utils import deprecation
-from pip._internal.vcs import git, mercurial, subversion, bazaar  # noqa
-from pip._vendor.urllib3.exceptions import InsecureRequestWarning
-
-logger = logging.getLogger(__name__)
-
-# Hide the InsecureRequestWarning from urllib3
-warnings.filterwarnings("ignore", category=InsecureRequestWarning)
-
-
-def main(args=None):
-    if args is None:
-        args = sys.argv[1:]
-
-    # Configure our deprecation warnings to be sent through loggers
-    deprecation.install_warning_logger()
-
-    autocomplete()
-
-    try:
-        cmd_name, cmd_args = parse_command(args)
-    except PipError as exc:
-        sys.stderr.write("ERROR: %s" % exc)
-        sys.stderr.write(os.linesep)
-        sys.exit(1)
-
-    # Needed for locale.getpreferredencoding(False) to work
-    # in pip._internal.utils.encoding.auto_decode
-    try:
-        locale.setlocale(locale.LC_ALL, '')
-    except locale.Error as e:
-        # setlocale can apparently crash if locale are uninitialized
-        logger.debug("Ignoring error %s when setting locale", e)
-    command = commands_dict[cmd_name](isolated=("--isolated" in cmd_args))
-    return command.main(cmd_args)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/build_env.py

@@ -1,215 +0,0 @@
-"""Build Environment used for isolation during sdist building
-"""
-
-import logging
-import os
-import sys
-import textwrap
-from collections import OrderedDict
-from distutils.sysconfig import get_python_lib
-from sysconfig import get_paths
-
-from pip._vendor.pkg_resources import Requirement, VersionConflict, WorkingSet
-
-from pip import __file__ as pip_location
-from pip._internal.utils.misc import call_subprocess
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.utils.ui import open_spinner
-
-if MYPY_CHECK_RUNNING:
-    from typing import Tuple, Set, Iterable, Optional, List  # noqa: F401
-    from pip._internal.index import PackageFinder  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-class _Prefix:
-
-    def __init__(self, path):
-        # type: (str) -> None
-        self.path = path
-        self.setup = False
-        self.bin_dir = get_paths(
-            'nt' if os.name == 'nt' else 'posix_prefix',
-            vars={'base': path, 'platbase': path}
-        )['scripts']
-        # Note: prefer distutils' sysconfig to get the
-        # library paths so PyPy is correctly supported.
-        purelib = get_python_lib(plat_specific=False, prefix=path)
-        platlib = get_python_lib(plat_specific=True, prefix=path)
-        if purelib == platlib:
-            self.lib_dirs = [purelib]
-        else:
-            self.lib_dirs = [purelib, platlib]
-
-
-class BuildEnvironment(object):
-    """Creates and manages an isolated environment to install build deps
-    """
-
-    def __init__(self):
-        # type: () -> None
-        self._temp_dir = TempDirectory(kind="build-env")
-        self._temp_dir.create()
-
-        self._prefixes = OrderedDict((
-            (name, _Prefix(os.path.join(self._temp_dir.path, name)))
-            for name in ('normal', 'overlay')
-        ))
-
-        self._bin_dirs = []  # type: List[str]
-        self._lib_dirs = []  # type: List[str]
-        for prefix in reversed(list(self._prefixes.values())):
-            self._bin_dirs.append(prefix.bin_dir)
-            self._lib_dirs.extend(prefix.lib_dirs)
-
-        # Customize site to:
-        # - ensure .pth files are honored
-        # - prevent access to system site packages
-        system_sites = {
-            os.path.normcase(site) for site in (
-                get_python_lib(plat_specific=False),
-                get_python_lib(plat_specific=True),
-            )
-        }
-        self._site_dir = os.path.join(self._temp_dir.path, 'site')
-        if not os.path.exists(self._site_dir):
-            os.mkdir(self._site_dir)
-        with open(os.path.join(self._site_dir, 'sitecustomize.py'), 'w') as fp:
-            fp.write(textwrap.dedent(
-                '''
-                import os, site, sys
-
-                # First, drop system-sites related paths.
-                original_sys_path = sys.path[:]
-                known_paths = set()
-                for path in {system_sites!r}:
-                    site.addsitedir(path, known_paths=known_paths)
-                system_paths = set(
-                    os.path.normcase(path)
-                    for path in sys.path[len(original_sys_path):]
-                )
-                original_sys_path = [
-                    path for path in original_sys_path
-                    if os.path.normcase(path) not in system_paths
-                ]
-                sys.path = original_sys_path
-
-                # Second, add lib directories.
-                # ensuring .pth file are processed.
-                for path in {lib_dirs!r}:
-                    assert not path in sys.path
-                    site.addsitedir(path)
-                '''
-            ).format(system_sites=system_sites, lib_dirs=self._lib_dirs))
-
-    def __enter__(self):
-        self._save_env = {
-            name: os.environ.get(name, None)
-            for name in ('PATH', 'PYTHONNOUSERSITE', 'PYTHONPATH')
-        }
-
-        path = self._bin_dirs[:]
-        old_path = self._save_env['PATH']
-        if old_path:
-            path.extend(old_path.split(os.pathsep))
-
-        pythonpath = [self._site_dir]
-
-        os.environ.update({
-            'PATH': os.pathsep.join(path),
-            'PYTHONNOUSERSITE': '1',
-            'PYTHONPATH': os.pathsep.join(pythonpath),
-        })
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        for varname, old_value in self._save_env.items():
-            if old_value is None:
-                os.environ.pop(varname, None)
-            else:
-                os.environ[varname] = old_value
-
-    def cleanup(self):
-        # type: () -> None
-        self._temp_dir.cleanup()
-
-    def check_requirements(self, reqs):
-        # type: (Iterable[str]) -> Tuple[Set[Tuple[str, str]], Set[str]]
-        """Return 2 sets:
-            - conflicting requirements: set of (installed, wanted) reqs tuples
-            - missing requirements: set of reqs
-        """
-        missing = set()
-        conflicting = set()
-        if reqs:
-            ws = WorkingSet(self._lib_dirs)
-            for req in reqs:
-                try:
-                    if ws.find(Requirement.parse(req)) is None:
-                        missing.add(req)
-                except VersionConflict as e:
-                    conflicting.add((str(e.args[0].as_requirement()),
-                                     str(e.args[1])))
-        return conflicting, missing
-
-    def install_requirements(
-        self,
-        finder,  # type: PackageFinder
-        requirements,  # type: Iterable[str]
-        prefix_as_string,  # type: str
-        message  # type: Optional[str]
-    ):
-        # type: (...) -> None
-        prefix = self._prefixes[prefix_as_string]
-        assert not prefix.setup
-        prefix.setup = True
-        if not requirements:
-            return
-        args = [
-            sys.executable, os.path.dirname(pip_location), 'install',
-            '--ignore-installed', '--no-user', '--prefix', prefix.path,
-            '--no-warn-script-location',
-        ]  # type: List[str]
-        if logger.getEffectiveLevel() <= logging.DEBUG:
-            args.append('-v')
-        for format_control in ('no_binary', 'only_binary'):
-            formats = getattr(finder.format_control, format_control)
-            args.extend(('--' + format_control.replace('_', '-'),
-                         ','.join(sorted(formats or {':none:'}))))
-        if finder.index_urls:
-            args.extend(['-i', finder.index_urls[0]])
-            for extra_index in finder.index_urls[1:]:
-                args.extend(['--extra-index-url', extra_index])
-        else:
-            args.append('--no-index')
-        for link in finder.find_links:
-            args.extend(['--find-links', link])
-        for _, host, _ in finder.secure_origins:
-            args.extend(['--trusted-host', host])
-        if finder.allow_all_prereleases:
-            args.append('--pre')
-        args.append('--')
-        args.extend(requirements)
-        with open_spinner(message) as spinner:
-            call_subprocess(args, show_stdout=False, spinner=spinner)
-
-
-class NoOpBuildEnvironment(BuildEnvironment):
-    """A no-op drop-in replacement for BuildEnvironment
-    """
-
-    def __init__(self):
-        pass
-
-    def __enter__(self):
-        pass
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        pass
-
-    def cleanup(self):
-        pass
-
-    def install_requirements(self, finder, requirements, prefix, message):
-        raise NotImplementedError()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cache.py

@@ -1,224 +0,0 @@
-"""Cache Management
-"""
-
-import errno
-import hashlib
-import logging
-import os
-
-from pip._vendor.packaging.utils import canonicalize_name
-
-from pip._internal.download import path_to_url
-from pip._internal.models.link import Link
-from pip._internal.utils.compat import expanduser
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.wheel import InvalidWheelFilename, Wheel
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, Set, List, Any  # noqa: F401
-    from pip._internal.index import FormatControl  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-class Cache(object):
-    """An abstract class - provides cache directories for data from links
-
-
-        :param cache_dir: The root of the cache.
-        :param format_control: An object of FormatControl class to limit
-            binaries being read from the cache.
-        :param allowed_formats: which formats of files the cache should store.
-            ('binary' and 'source' are the only allowed values)
-    """
-
-    def __init__(self, cache_dir, format_control, allowed_formats):
-        # type: (str, FormatControl, Set[str]) -> None
-        super(Cache, self).__init__()
-        self.cache_dir = expanduser(cache_dir) if cache_dir else None
-        self.format_control = format_control
-        self.allowed_formats = allowed_formats
-
-        _valid_formats = {"source", "binary"}
-        assert self.allowed_formats.union(_valid_formats) == _valid_formats
-
-    def _get_cache_path_parts(self, link):
-        # type: (Link) -> List[str]
-        """Get parts of part that must be os.path.joined with cache_dir
-        """
-
-        # We want to generate an url to use as our cache key, we don't want to
-        # just re-use the URL because it might have other items in the fragment
-        # and we don't care about those.
-        key_parts = [link.url_without_fragment]
-        if link.hash_name is not None and link.hash is not None:
-            key_parts.append("=".join([link.hash_name, link.hash]))
-        key_url = "#".join(key_parts)
-
-        # Encode our key url with sha224, we'll use this because it has similar
-        # security properties to sha256, but with a shorter total output (and
-        # thus less secure). However the differences don't make a lot of
-        # difference for our use case here.
-        hashed = hashlib.sha224(key_url.encode()).hexdigest()
-
-        # We want to nest the directories some to prevent having a ton of top
-        # level directories where we might run out of sub directories on some
-        # FS.
-        parts = [hashed[:2], hashed[2:4], hashed[4:6], hashed[6:]]
-
-        return parts
-
-    def _get_candidates(self, link, package_name):
-        # type: (Link, Optional[str]) -> List[Any]
-        can_not_cache = (
-            not self.cache_dir or
-            not package_name or
-            not link
-        )
-        if can_not_cache:
-            return []
-
-        canonical_name = canonicalize_name(package_name)
-        formats = self.format_control.get_allowed_formats(
-            canonical_name
-        )
-        if not self.allowed_formats.intersection(formats):
-            return []
-
-        root = self.get_path_for_link(link)
-        try:
-            return os.listdir(root)
-        except OSError as err:
-            if err.errno in {errno.ENOENT, errno.ENOTDIR}:
-                return []
-            raise
-
-    def get_path_for_link(self, link):
-        # type: (Link) -> str
-        """Return a directory to store cached items in for link.
-        """
-        raise NotImplementedError()
-
-    def get(self, link, package_name):
-        # type: (Link, Optional[str]) -> Link
-        """Returns a link to a cached item if it exists, otherwise returns the
-        passed link.
-        """
-        raise NotImplementedError()
-
-    def _link_for_candidate(self, link, candidate):
-        # type: (Link, str) -> Link
-        root = self.get_path_for_link(link)
-        path = os.path.join(root, candidate)
-
-        return Link(path_to_url(path))
-
-    def cleanup(self):
-        # type: () -> None
-        pass
-
-
-class SimpleWheelCache(Cache):
-    """A cache of wheels for future installs.
-    """
-
-    def __init__(self, cache_dir, format_control):
-        # type: (str, FormatControl) -> None
-        super(SimpleWheelCache, self).__init__(
-            cache_dir, format_control, {"binary"}
-        )
-
-    def get_path_for_link(self, link):
-        # type: (Link) -> str
-        """Return a directory to store cached wheels for link
-
-        Because there are M wheels for any one sdist, we provide a directory
-        to cache them in, and then consult that directory when looking up
-        cache hits.
-
-        We only insert things into the cache if they have plausible version
-        numbers, so that we don't contaminate the cache with things that were
-        not unique. E.g. ./package might have dozens of installs done for it
-        and build a version of 0.0...and if we built and cached a wheel, we'd
-        end up using the same wheel even if the source has been edited.
-
-        :param link: The link of the sdist for which this will cache wheels.
-        """
-        parts = self._get_cache_path_parts(link)
-
-        # Store wheels within the root cache_dir
-        return os.path.join(self.cache_dir, "wheels", *parts)
-
-    def get(self, link, package_name):
-        # type: (Link, Optional[str]) -> Link
-        candidates = []
-
-        for wheel_name in self._get_candidates(link, package_name):
-            try:
-                wheel = Wheel(wheel_name)
-            except InvalidWheelFilename:
-                continue
-            if not wheel.supported():
-                # Built for a different python/arch/etc
-                continue
-            candidates.append((wheel.support_index_min(), wheel_name))
-
-        if not candidates:
-            return link
-
-        return self._link_for_candidate(link, min(candidates)[1])
-
-
-class EphemWheelCache(SimpleWheelCache):
-    """A SimpleWheelCache that creates it's own temporary cache directory
-    """
-
-    def __init__(self, format_control):
-        # type: (FormatControl) -> None
-        self._temp_dir = TempDirectory(kind="ephem-wheel-cache")
-        self._temp_dir.create()
-
-        super(EphemWheelCache, self).__init__(
-            self._temp_dir.path, format_control
-        )
-
-    def cleanup(self):
-        # type: () -> None
-        self._temp_dir.cleanup()
-
-
-class WheelCache(Cache):
-    """Wraps EphemWheelCache and SimpleWheelCache into a single Cache
-
-    This Cache allows for gracefully degradation, using the ephem wheel cache
-    when a certain link is not found in the simple wheel cache first.
-    """
-
-    def __init__(self, cache_dir, format_control):
-        # type: (str, FormatControl) -> None
-        super(WheelCache, self).__init__(
-            cache_dir, format_control, {'binary'}
-        )
-        self._wheel_cache = SimpleWheelCache(cache_dir, format_control)
-        self._ephem_cache = EphemWheelCache(format_control)
-
-    def get_path_for_link(self, link):
-        # type: (Link) -> str
-        return self._wheel_cache.get_path_for_link(link)
-
-    def get_ephem_path_for_link(self, link):
-        # type: (Link) -> str
-        return self._ephem_cache.get_path_for_link(link)
-
-    def get(self, link, package_name):
-        # type: (Link, Optional[str]) -> Link
-        retval = self._wheel_cache.get(link, package_name)
-        if retval is link:
-            retval = self._ephem_cache.get(link, package_name)
-        return retval
-
-    def cleanup(self):
-        # type: () -> None
-        self._wheel_cache.cleanup()
-        self._ephem_cache.cleanup()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/__init__.py

@@ -1,4 +0,0 @@
-"""Subpackage containing all of pip's command line interface related code
-"""
-
-# This file intentionally does not import submodules

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/autocompletion.py

@@ -1,152 +0,0 @@
-"""Logic that powers autocompletion installed by ``pip completion``.
-"""
-
-import optparse
-import os
-import sys
-
-from pip._internal.cli.main_parser import create_main_parser
-from pip._internal.commands import commands_dict, get_summaries
-from pip._internal.utils.misc import get_installed_distributions
-
-
-def autocomplete():
-    """Entry Point for completion of main and subcommand options.
-    """
-    # Don't complete if user hasn't sourced bash_completion file.
-    if 'PIP_AUTO_COMPLETE' not in os.environ:
-        return
-    cwords = os.environ['COMP_WORDS'].split()[1:]
-    cword = int(os.environ['COMP_CWORD'])
-    try:
-        current = cwords[cword - 1]
-    except IndexError:
-        current = ''
-
-    subcommands = [cmd for cmd, summary in get_summaries()]
-    options = []
-    # subcommand
-    try:
-        subcommand_name = [w for w in cwords if w in subcommands][0]
-    except IndexError:
-        subcommand_name = None
-
-    parser = create_main_parser()
-    # subcommand options
-    if subcommand_name:
-        # special case: 'help' subcommand has no options
-        if subcommand_name == 'help':
-            sys.exit(1)
-        # special case: list locally installed dists for show and uninstall
-        should_list_installed = (
-            subcommand_name in ['show', 'uninstall'] and
-            not current.startswith('-')
-        )
-        if should_list_installed:
-            installed = []
-            lc = current.lower()
-            for dist in get_installed_distributions(local_only=True):
-                if dist.key.startswith(lc) and dist.key not in cwords[1:]:
-                    installed.append(dist.key)
-            # if there are no dists installed, fall back to option completion
-            if installed:
-                for dist in installed:
-                    print(dist)
-                sys.exit(1)
-
-        subcommand = commands_dict[subcommand_name]()
-
-        for opt in subcommand.parser.option_list_all:
-            if opt.help != optparse.SUPPRESS_HELP:
-                for opt_str in opt._long_opts + opt._short_opts:
-                    options.append((opt_str, opt.nargs))
-
-        # filter out previously specified options from available options
-        prev_opts = [x.split('=')[0] for x in cwords[1:cword - 1]]
-        options = [(x, v) for (x, v) in options if x not in prev_opts]
-        # filter options by current input
-        options = [(k, v) for k, v in options if k.startswith(current)]
-        # get completion type given cwords and available subcommand options
-        completion_type = get_path_completion_type(
-            cwords, cword, subcommand.parser.option_list_all,
-        )
-        # get completion files and directories if ``completion_type`` is
-        # ``<file>``, ``<dir>`` or ``<path>``
-        if completion_type:
-            options = auto_complete_paths(current, completion_type)
-            options = ((opt, 0) for opt in options)
-        for option in options:
-            opt_label = option[0]
-            # append '=' to options which require args
-            if option[1] and option[0][:2] == "--":
-                opt_label += '='
-            print(opt_label)
-    else:
-        # show main parser options only when necessary
-
-        opts = [i.option_list for i in parser.option_groups]
-        opts.append(parser.option_list)
-        opts = (o for it in opts for o in it)
-        if current.startswith('-'):
-            for opt in opts:
-                if opt.help != optparse.SUPPRESS_HELP:
-                    subcommands += opt._long_opts + opt._short_opts
-        else:
-            # get completion type given cwords and all available options
-            completion_type = get_path_completion_type(cwords, cword, opts)
-            if completion_type:
-                subcommands = auto_complete_paths(current, completion_type)
-
-        print(' '.join([x for x in subcommands if x.startswith(current)]))
-    sys.exit(1)
-
-
-def get_path_completion_type(cwords, cword, opts):
-    """Get the type of path completion (``file``, ``dir``, ``path`` or None)
-
-    :param cwords: same as the environmental variable ``COMP_WORDS``
-    :param cword: same as the environmental variable ``COMP_CWORD``
-    :param opts: The available options to check
-    :return: path completion type (``file``, ``dir``, ``path`` or None)
-    """
-    if cword < 2 or not cwords[cword - 2].startswith('-'):
-        return
-    for opt in opts:
-        if opt.help == optparse.SUPPRESS_HELP:
-            continue
-        for o in str(opt).split('/'):
-            if cwords[cword - 2].split('=')[0] == o:
-                if not opt.metavar or any(
-                        x in ('path', 'file', 'dir')
-                        for x in opt.metavar.split('/')):
-                    return opt.metavar
-
-
-def auto_complete_paths(current, completion_type):
-    """If ``completion_type`` is ``file`` or ``path``, list all regular files
-    and directories starting with ``current``; otherwise only list directories
-    starting with ``current``.
-
-    :param current: The word to be completed
-    :param completion_type: path completion type(`file`, `path` or `dir`)i
-    :return: A generator of regular files and/or directories
-    """
-    directory, filename = os.path.split(current)
-    current_path = os.path.abspath(directory)
-    # Don't complete paths if they can't be accessed
-    if not os.access(current_path, os.R_OK):
-        return
-    filename = os.path.normcase(filename)
-    # list all files that start with ``filename``
-    file_list = (x for x in os.listdir(current_path)
-                 if os.path.normcase(x).startswith(filename))
-    for f in file_list:
-        opt = os.path.join(current_path, f)
-        comp_file = os.path.normcase(os.path.join(directory, f))
-        # complete regular files when there is not ``<dir>`` after option
-        # complete directories when there is ``<file>``, ``<path>`` or
-        # ``<dir>``after option
-        if completion_type != 'dir' and os.path.isfile(opt):
-            yield comp_file
-        elif os.path.isdir(opt):
-            yield os.path.join(comp_file, '')

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/base_command.py

@@ -1,341 +0,0 @@
-"""Base Command class, and related routines"""
-from __future__ import absolute_import, print_function
-
-import logging
-import logging.config
-import optparse
-import os
-import platform
-import sys
-import traceback
-
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.parser import (
-    ConfigOptionParser, UpdatingDefaultsHelpFormatter,
-)
-from pip._internal.cli.status_codes import (
-    ERROR, PREVIOUS_BUILD_DIR_ERROR, SUCCESS, UNKNOWN_ERROR,
-    VIRTUALENV_NOT_FOUND,
-)
-from pip._internal.download import PipSession
-from pip._internal.exceptions import (
-    BadCommand, CommandError, InstallationError, PreviousBuildDirError,
-    UninstallationError,
-)
-from pip._internal.index import PackageFinder
-from pip._internal.locations import running_under_virtualenv
-from pip._internal.req.constructors import (
-    install_req_from_editable, install_req_from_line,
-)
-from pip._internal.req.req_file import parse_requirements
-from pip._internal.utils.deprecation import deprecated
-from pip._internal.utils.logging import BrokenStdoutLoggingError, setup_logging
-from pip._internal.utils.misc import (
-    get_prog, normalize_path, redact_password_from_url,
-)
-from pip._internal.utils.outdated import pip_version_check
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, List, Tuple, Any  # noqa: F401
-    from optparse import Values  # noqa: F401
-    from pip._internal.cache import WheelCache  # noqa: F401
-    from pip._internal.req.req_set import RequirementSet  # noqa: F401
-
-__all__ = ['Command']
-
-logger = logging.getLogger(__name__)
-
-
-class Command(object):
-    name = None  # type: Optional[str]
-    usage = None  # type: Optional[str]
-    hidden = False  # type: bool
-    ignore_require_venv = False  # type: bool
-
-    def __init__(self, isolated=False):
-        # type: (bool) -> None
-        parser_kw = {
-            'usage': self.usage,
-            'prog': '%s %s' % (get_prog(), self.name),
-            'formatter': UpdatingDefaultsHelpFormatter(),
-            'add_help_option': False,
-            'name': self.name,
-            'description': self.__doc__,
-            'isolated': isolated,
-        }
-
-        self.parser = ConfigOptionParser(**parser_kw)
-
-        # Commands should add options to this option group
-        optgroup_name = '%s Options' % self.name.capitalize()
-        self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name)
-
-        # Add the general options
-        gen_opts = cmdoptions.make_option_group(
-            cmdoptions.general_group,
-            self.parser,
-        )
-        self.parser.add_option_group(gen_opts)
-
-    def run(self, options, args):
-        # type: (Values, List[Any]) -> Any
-        raise NotImplementedError
-
-    def _build_session(self, options, retries=None, timeout=None):
-        # type: (Values, Optional[int], Optional[int]) -> PipSession
-        session = PipSession(
-            cache=(
-                normalize_path(os.path.join(options.cache_dir, "http"))
-                if options.cache_dir else None
-            ),
-            retries=retries if retries is not None else options.retries,
-            insecure_hosts=options.trusted_hosts,
-        )
-
-        # Handle custom ca-bundles from the user
-        if options.cert:
-            session.verify = options.cert
-
-        # Handle SSL client certificate
-        if options.client_cert:
-            session.cert = options.client_cert
-
-        # Handle timeouts
-        if options.timeout or timeout:
-            session.timeout = (
-                timeout if timeout is not None else options.timeout
-            )
-
-        # Handle configured proxies
-        if options.proxy:
-            session.proxies = {
-                "http": options.proxy,
-                "https": options.proxy,
-            }
-
-        # Determine if we can prompt the user for authentication or not
-        session.auth.prompting = not options.no_input
-
-        return session
-
-    def parse_args(self, args):
-        # type: (List[str]) -> Tuple
-        # factored out for testability
-        return self.parser.parse_args(args)
-
-    def main(self, args):
-        # type: (List[str]) -> int
-        options, args = self.parse_args(args)
-
-        # Set verbosity so that it can be used elsewhere.
-        self.verbosity = options.verbose - options.quiet
-
-        level_number = setup_logging(
-            verbosity=self.verbosity,
-            no_color=options.no_color,
-            user_log_file=options.log,
-        )
-
-        if sys.version_info[:2] == (3, 4):
-            deprecated(
-                "Python 3.4 support has been deprecated. pip 19.1 will be the "
-                "last one supporting it. Please upgrade your Python as Python "
-                "3.4 won't be maintained after March 2019 (cf PEP 429).",
-                replacement=None,
-                gone_in='19.2',
-            )
-        elif sys.version_info[:2] == (2, 7):
-            message = (
-                "A future version of pip will drop support for Python 2.7."
-            )
-            if platform.python_implementation() == "CPython":
-                message = (
-                    "Python 2.7 will reach the end of its life on January "
-                    "1st, 2020. Please upgrade your Python as Python 2.7 "
-                    "won't be maintained after that date. "
-                ) + message
-            deprecated(message, replacement=None, gone_in=None)
-
-        # TODO: Try to get these passing down from the command?
-        #       without resorting to os.environ to hold these.
-        #       This also affects isolated builds and it should.
-
-        if options.no_input:
-            os.environ['PIP_NO_INPUT'] = '1'
-
-        if options.exists_action:
-            os.environ['PIP_EXISTS_ACTION'] = ' '.join(options.exists_action)
-
-        if options.require_venv and not self.ignore_require_venv:
-            # If a venv is required check if it can really be found
-            if not running_under_virtualenv():
-                logger.critical(
-                    'Could not find an activated virtualenv (required).'
-                )
-                sys.exit(VIRTUALENV_NOT_FOUND)
-
-        try:
-            status = self.run(options, args)
-            # FIXME: all commands should return an exit status
-            # and when it is done, isinstance is not needed anymore
-            if isinstance(status, int):
-                return status
-        except PreviousBuildDirError as exc:
-            logger.critical(str(exc))
-            logger.debug('Exception information:', exc_info=True)
-
-            return PREVIOUS_BUILD_DIR_ERROR
-        except (InstallationError, UninstallationError, BadCommand) as exc:
-            logger.critical(str(exc))
-            logger.debug('Exception information:', exc_info=True)
-
-            return ERROR
-        except CommandError as exc:
-            logger.critical('ERROR: %s', exc)
-            logger.debug('Exception information:', exc_info=True)
-
-            return ERROR
-        except BrokenStdoutLoggingError:
-            # Bypass our logger and write any remaining messages to stderr
-            # because stdout no longer works.
-            print('ERROR: Pipe to stdout was broken', file=sys.stderr)
-            if level_number <= logging.DEBUG:
-                traceback.print_exc(file=sys.stderr)
-
-            return ERROR
-        except KeyboardInterrupt:
-            logger.critical('Operation cancelled by user')
-            logger.debug('Exception information:', exc_info=True)
-
-            return ERROR
-        except BaseException:
-            logger.critical('Exception:', exc_info=True)
-
-            return UNKNOWN_ERROR
-        finally:
-            allow_version_check = (
-                # Does this command have the index_group options?
-                hasattr(options, "no_index") and
-                # Is this command allowed to perform this check?
-                not (options.disable_pip_version_check or options.no_index)
-            )
-            # Check if we're using the latest version of pip available
-            if allow_version_check:
-                session = self._build_session(
-                    options,
-                    retries=0,
-                    timeout=min(5, options.timeout)
-                )
-                with session:
-                    pip_version_check(session, options)
-
-            # Shutdown the logging module
-            logging.shutdown()
-
-        return SUCCESS
-
-
-class RequirementCommand(Command):
-
-    @staticmethod
-    def populate_requirement_set(requirement_set,  # type: RequirementSet
-                                 args,             # type: List[str]
-                                 options,          # type: Values
-                                 finder,           # type: PackageFinder
-                                 session,          # type: PipSession
-                                 name,             # type: str
-                                 wheel_cache       # type: Optional[WheelCache]
-                                 ):
-        # type: (...) -> None
-        """
-        Marshal cmd line args into a requirement set.
-        """
-        # NOTE: As a side-effect, options.require_hashes and
-        #       requirement_set.require_hashes may be updated
-
-        for filename in options.constraints:
-            for req_to_add in parse_requirements(
-                    filename,
-                    constraint=True, finder=finder, options=options,
-                    session=session, wheel_cache=wheel_cache):
-                req_to_add.is_direct = True
-                requirement_set.add_requirement(req_to_add)
-
-        for req in args:
-            req_to_add = install_req_from_line(
-                req, None, isolated=options.isolated_mode,
-                use_pep517=options.use_pep517,
-                wheel_cache=wheel_cache
-            )
-            req_to_add.is_direct = True
-            requirement_set.add_requirement(req_to_add)
-
-        for req in options.editables:
-            req_to_add = install_req_from_editable(
-                req,
-                isolated=options.isolated_mode,
-                use_pep517=options.use_pep517,
-                wheel_cache=wheel_cache
-            )
-            req_to_add.is_direct = True
-            requirement_set.add_requirement(req_to_add)
-
-        for filename in options.requirements:
-            for req_to_add in parse_requirements(
-                    filename,
-                    finder=finder, options=options, session=session,
-                    wheel_cache=wheel_cache,
-                    use_pep517=options.use_pep517):
-                req_to_add.is_direct = True
-                requirement_set.add_requirement(req_to_add)
-        # If --require-hashes was a line in a requirements file, tell
-        # RequirementSet about it:
-        requirement_set.require_hashes = options.require_hashes
-
-        if not (args or options.editables or options.requirements):
-            opts = {'name': name}
-            if options.find_links:
-                raise CommandError(
-                    'You must give at least one requirement to %(name)s '
-                    '(maybe you meant "pip %(name)s %(links)s"?)' %
-                    dict(opts, links=' '.join(options.find_links)))
-            else:
-                raise CommandError(
-                    'You must give at least one requirement to %(name)s '
-                    '(see "pip help %(name)s")' % opts)
-
-    def _build_package_finder(
-        self,
-        options,               # type: Values
-        session,               # type: PipSession
-        platform=None,         # type: Optional[str]
-        python_versions=None,  # type: Optional[List[str]]
-        abi=None,              # type: Optional[str]
-        implementation=None    # type: Optional[str]
-    ):
-        # type: (...) -> PackageFinder
-        """
-        Create a package finder appropriate to this requirement command.
-        """
-        index_urls = [options.index_url] + options.extra_index_urls
-        if options.no_index:
-            logger.debug(
-                'Ignoring indexes: %s',
-                ','.join(redact_password_from_url(url) for url in index_urls),
-            )
-            index_urls = []
-
-        return PackageFinder(
-            find_links=options.find_links,
-            format_control=options.format_control,
-            index_urls=index_urls,
-            trusted_hosts=options.trusted_hosts,
-            allow_all_prereleases=options.pre,
-            session=session,
-            platform=platform,
-            versions=python_versions,
-            abi=abi,
-            implementation=implementation,
-            prefer_binary=options.prefer_binary,
-        )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/cmdoptions.py

@@ -1,809 +0,0 @@
-"""
-shared options and groups
-
-The principle here is to define options once, but *not* instantiate them
-globally. One reason being that options with action='append' can carry state
-between parses. pip parses general options twice internally, and shouldn't
-pass on state. To be consistent, all options will follow this design.
-
-"""
-from __future__ import absolute_import
-
-import textwrap
-import warnings
-from distutils.util import strtobool
-from functools import partial
-from optparse import SUPPRESS_HELP, Option, OptionGroup
-
-from pip._internal.exceptions import CommandError
-from pip._internal.locations import USER_CACHE_DIR, src_prefix
-from pip._internal.models.format_control import FormatControl
-from pip._internal.models.index import PyPI
-from pip._internal.utils.hashes import STRONG_HASHES
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.utils.ui import BAR_TYPES
-
-if MYPY_CHECK_RUNNING:
-    from typing import Any, Callable, Dict, List, Optional, Union  # noqa: F401
-    from optparse import OptionParser, Values  # noqa: F401
-    from pip._internal.cli.parser import ConfigOptionParser  # noqa: F401
-
-
-def raise_option_error(parser, option, msg):
-    """
-    Raise an option parsing error using parser.error().
-
-    Args:
-      parser: an OptionParser instance.
-      option: an Option instance.
-      msg: the error text.
-    """
-    msg = '{} error: {}'.format(option, msg)
-    msg = textwrap.fill(' '.join(msg.split()))
-    parser.error(msg)
-
-
-def make_option_group(group, parser):
-    # type: (Dict[str, Any], ConfigOptionParser) -> OptionGroup
-    """
-    Return an OptionGroup object
-    group  -- assumed to be dict with 'name' and 'options' keys
-    parser -- an optparse Parser
-    """
-    option_group = OptionGroup(parser, group['name'])
-    for option in group['options']:
-        option_group.add_option(option())
-    return option_group
-
-
-def check_install_build_global(options, check_options=None):
-    # type: (Values, Optional[Values]) -> None
-    """Disable wheels if per-setup.py call options are set.
-
-    :param options: The OptionParser options to update.
-    :param check_options: The options to check, if not supplied defaults to
-        options.
-    """
-    if check_options is None:
-        check_options = options
-
-    def getname(n):
-        return getattr(check_options, n, None)
-    names = ["build_options", "global_options", "install_options"]
-    if any(map(getname, names)):
-        control = options.format_control
-        control.disallow_binaries()
-        warnings.warn(
-            'Disabling all use of wheels due to the use of --build-options '
-            '/ --global-options / --install-options.', stacklevel=2,
-        )
-
-
-def check_dist_restriction(options, check_target=False):
-    # type: (Values, bool) -> None
-    """Function for determining if custom platform options are allowed.
-
-    :param options: The OptionParser options.
-    :param check_target: Whether or not to check if --target is being used.
-    """
-    dist_restriction_set = any([
-        options.python_version,
-        options.platform,
-        options.abi,
-        options.implementation,
-    ])
-
-    binary_only = FormatControl(set(), {':all:'})
-    sdist_dependencies_allowed = (
-        options.format_control != binary_only and
-        not options.ignore_dependencies
-    )
-
-    # Installations or downloads using dist restrictions must not combine
-    # source distributions and dist-specific wheels, as they are not
-    # gauranteed to be locally compatible.
-    if dist_restriction_set and sdist_dependencies_allowed:
-        raise CommandError(
-            "When restricting platform and interpreter constraints using "
-            "--python-version, --platform, --abi, or --implementation, "
-            "either --no-deps must be set, or --only-binary=:all: must be "
-            "set and --no-binary must not be set (or must be set to "
-            ":none:)."
-        )
-
-    if check_target:
-        if dist_restriction_set and not options.target_dir:
-            raise CommandError(
-                "Can not use any platform or abi specific options unless "
-                "installing via '--target'"
-            )
-
-
-###########
-# options #
-###########
-
-help_ = partial(
-    Option,
-    '-h', '--help',
-    dest='help',
-    action='help',
-    help='Show help.',
-)  # type: Callable[..., Option]
-
-isolated_mode = partial(
-    Option,
-    "--isolated",
-    dest="isolated_mode",
-    action="store_true",
-    default=False,
-    help=(
-        "Run pip in an isolated mode, ignoring environment variables and user "
-        "configuration."
-    ),
-)  # type: Callable[..., Option]
-
-require_virtualenv = partial(
-    Option,
-    # Run only if inside a virtualenv, bail if not.
-    '--require-virtualenv', '--require-venv',
-    dest='require_venv',
-    action='store_true',
-    default=False,
-    help=SUPPRESS_HELP
-)  # type: Callable[..., Option]
-
-verbose = partial(
-    Option,
-    '-v', '--verbose',
-    dest='verbose',
-    action='count',
-    default=0,
-    help='Give more output. Option is additive, and can be used up to 3 times.'
-)  # type: Callable[..., Option]
-
-no_color = partial(
-    Option,
-    '--no-color',
-    dest='no_color',
-    action='store_true',
-    default=False,
-    help="Suppress colored output",
-)  # type: Callable[..., Option]
-
-version = partial(
-    Option,
-    '-V', '--version',
-    dest='version',
-    action='store_true',
-    help='Show version and exit.',
-)  # type: Callable[..., Option]
-
-quiet = partial(
-    Option,
-    '-q', '--quiet',
-    dest='quiet',
-    action='count',
-    default=0,
-    help=(
-        'Give less output. Option is additive, and can be used up to 3'
-        ' times (corresponding to WARNING, ERROR, and CRITICAL logging'
-        ' levels).'
-    ),
-)  # type: Callable[..., Option]
-
-progress_bar = partial(
-    Option,
-    '--progress-bar',
-    dest='progress_bar',
-    type='choice',
-    choices=list(BAR_TYPES.keys()),
-    default='on',
-    help=(
-        'Specify type of progress to be displayed [' +
-        '|'.join(BAR_TYPES.keys()) + '] (default: %default)'
-    ),
-)  # type: Callable[..., Option]
-
-log = partial(
-    Option,
-    "--log", "--log-file", "--local-log",
-    dest="log",
-    metavar="path",
-    help="Path to a verbose appending log."
-)  # type: Callable[..., Option]
-
-no_input = partial(
-    Option,
-    # Don't ask for input
-    '--no-input',
-    dest='no_input',
-    action='store_true',
-    default=False,
-    help=SUPPRESS_HELP
-)  # type: Callable[..., Option]
-
-proxy = partial(
-    Option,
-    '--proxy',
-    dest='proxy',
-    type='str',
-    default='',
-    help="Specify a proxy in the form [user:passwd@]proxy.server:port."
-)  # type: Callable[..., Option]
-
-retries = partial(
-    Option,
-    '--retries',
-    dest='retries',
-    type='int',
-    default=5,
-    help="Maximum number of retries each connection should attempt "
-         "(default %default times).",
-)  # type: Callable[..., Option]
-
-timeout = partial(
-    Option,
-    '--timeout', '--default-timeout',
-    metavar='sec',
-    dest='timeout',
-    type='float',
-    default=15,
-    help='Set the socket timeout (default %default seconds).',
-)  # type: Callable[..., Option]
-
-skip_requirements_regex = partial(
-    Option,
-    # A regex to be used to skip requirements
-    '--skip-requirements-regex',
-    dest='skip_requirements_regex',
-    type='str',
-    default='',
-    help=SUPPRESS_HELP,
-)  # type: Callable[..., Option]
-
-
-def exists_action():
-    # type: () -> Option
-    return Option(
-        # Option when path already exist
-        '--exists-action',
-        dest='exists_action',
-        type='choice',
-        choices=['s', 'i', 'w', 'b', 'a'],
-        default=[],
-        action='append',
-        metavar='action',
-        help="Default action when a path already exists: "
-             "(s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort).",
-    )
-
-
-cert = partial(
-    Option,
-    '--cert',
-    dest='cert',
-    type='str',
-    metavar='path',
-    help="Path to alternate CA bundle.",
-)  # type: Callable[..., Option]
-
-client_cert = partial(
-    Option,
-    '--client-cert',
-    dest='client_cert',
-    type='str',
-    default=None,
-    metavar='path',
-    help="Path to SSL client certificate, a single file containing the "
-         "private key and the certificate in PEM format.",
-)  # type: Callable[..., Option]
-
-index_url = partial(
-    Option,
-    '-i', '--index-url', '--pypi-url',
-    dest='index_url',
-    metavar='URL',
-    default=PyPI.simple_url,
-    help="Base URL of Python Package Index (default %default). "
-         "This should point to a repository compliant with PEP 503 "
-         "(the simple repository API) or a local directory laid out "
-         "in the same format.",
-)  # type: Callable[..., Option]
-
-
-def extra_index_url():
-    return Option(
-        '--extra-index-url',
-        dest='extra_index_urls',
-        metavar='URL',
-        action='append',
-        default=[],
-        help="Extra URLs of package indexes to use in addition to "
-             "--index-url. Should follow the same rules as "
-             "--index-url.",
-    )
-
-
-no_index = partial(
-    Option,
-    '--no-index',
-    dest='no_index',
-    action='store_true',
-    default=False,
-    help='Ignore package index (only looking at --find-links URLs instead).',
-)  # type: Callable[..., Option]
-
-
-def find_links():
-    # type: () -> Option
-    return Option(
-        '-f', '--find-links',
-        dest='find_links',
-        action='append',
-        default=[],
-        metavar='url',
-        help="If a url or path to an html file, then parse for links to "
-             "archives. If a local path or file:// url that's a directory, "
-             "then look for archives in the directory listing.",
-    )
-
-
-def trusted_host():
-    # type: () -> Option
-    return Option(
-        "--trusted-host",
-        dest="trusted_hosts",
-        action="append",
-        metavar="HOSTNAME",
-        default=[],
-        help="Mark this host as trusted, even though it does not have valid "
-             "or any HTTPS.",
-    )
-
-
-def constraints():
-    # type: () -> Option
-    return Option(
-        '-c', '--constraint',
-        dest='constraints',
-        action='append',
-        default=[],
-        metavar='file',
-        help='Constrain versions using the given constraints file. '
-        'This option can be used multiple times.'
-    )
-
-
-def requirements():
-    # type: () -> Option
-    return Option(
-        '-r', '--requirement',
-        dest='requirements',
-        action='append',
-        default=[],
-        metavar='file',
-        help='Install from the given requirements file. '
-        'This option can be used multiple times.'
-    )
-
-
-def editable():
-    # type: () -> Option
-    return Option(
-        '-e', '--editable',
-        dest='editables',
-        action='append',
-        default=[],
-        metavar='path/url',
-        help=('Install a project in editable mode (i.e. setuptools '
-              '"develop mode") from a local project path or a VCS url.'),
-    )
-
-
-src = partial(
-    Option,
-    '--src', '--source', '--source-dir', '--source-directory',
-    dest='src_dir',
-    metavar='dir',
-    default=src_prefix,
-    help='Directory to check out editable projects into. '
-    'The default in a virtualenv is "<venv path>/src". '
-    'The default for global installs is "<current dir>/src".'
-)  # type: Callable[..., Option]
-
-
-def _get_format_control(values, option):
-    # type: (Values, Option) -> Any
-    """Get a format_control object."""
-    return getattr(values, option.dest)
-
-
-def _handle_no_binary(option, opt_str, value, parser):
-    # type: (Option, str, str, OptionParser) -> None
-    existing = _get_format_control(parser.values, option)
-    FormatControl.handle_mutual_excludes(
-        value, existing.no_binary, existing.only_binary,
-    )
-
-
-def _handle_only_binary(option, opt_str, value, parser):
-    # type: (Option, str, str, OptionParser) -> None
-    existing = _get_format_control(parser.values, option)
-    FormatControl.handle_mutual_excludes(
-        value, existing.only_binary, existing.no_binary,
-    )
-
-
-def no_binary():
-    # type: () -> Option
-    format_control = FormatControl(set(), set())
-    return Option(
-        "--no-binary", dest="format_control", action="callback",
-        callback=_handle_no_binary, type="str",
-        default=format_control,
-        help="Do not use binary packages. Can be supplied multiple times, and "
-             "each time adds to the existing value. Accepts either :all: to "
-             "disable all binary packages, :none: to empty the set, or one or "
-             "more package names with commas between them. Note that some "
-             "packages are tricky to compile and may fail to install when "
-             "this option is used on them.",
-    )
-
-
-def only_binary():
-    # type: () -> Option
-    format_control = FormatControl(set(), set())
-    return Option(
-        "--only-binary", dest="format_control", action="callback",
-        callback=_handle_only_binary, type="str",
-        default=format_control,
-        help="Do not use source packages. Can be supplied multiple times, and "
-             "each time adds to the existing value. Accepts either :all: to "
-             "disable all source packages, :none: to empty the set, or one or "
-             "more package names with commas between them. Packages without "
-             "binary distributions will fail to install when this option is "
-             "used on them.",
-    )
-
-
-platform = partial(
-    Option,
-    '--platform',
-    dest='platform',
-    metavar='platform',
-    default=None,
-    help=("Only use wheels compatible with <platform>. "
-          "Defaults to the platform of the running system."),
-)  # type: Callable[..., Option]
-
-
-python_version = partial(
-    Option,
-    '--python-version',
-    dest='python_version',
-    metavar='python_version',
-    default=None,
-    help=("Only use wheels compatible with Python "
-          "interpreter version <version>. If not specified, then the "
-          "current system interpreter minor version is used. A major "
-          "version (e.g. '2') can be specified to match all "
-          "minor revs of that major version.  A minor version "
-          "(e.g. '34') can also be specified."),
-)  # type: Callable[..., Option]
-
-
-implementation = partial(
-    Option,
-    '--implementation',
-    dest='implementation',
-    metavar='implementation',
-    default=None,
-    help=("Only use wheels compatible with Python "
-          "implementation <implementation>, e.g. 'pp', 'jy', 'cp', "
-          " or 'ip'. If not specified, then the current "
-          "interpreter implementation is used.  Use 'py' to force "
-          "implementation-agnostic wheels."),
-)  # type: Callable[..., Option]
-
-
-abi = partial(
-    Option,
-    '--abi',
-    dest='abi',
-    metavar='abi',
-    default=None,
-    help=("Only use wheels compatible with Python "
-          "abi <abi>, e.g. 'pypy_41'.  If not specified, then the "
-          "current interpreter abi tag is used.  Generally "
-          "you will need to specify --implementation, "
-          "--platform, and --python-version when using "
-          "this option."),
-)  # type: Callable[..., Option]
-
-
-def prefer_binary():
-    # type: () -> Option
-    return Option(
-        "--prefer-binary",
-        dest="prefer_binary",
-        action="store_true",
-        default=False,
-        help="Prefer older binary packages over newer source packages."
-    )
-
-
-cache_dir = partial(
-    Option,
-    "--cache-dir",
-    dest="cache_dir",
-    default=USER_CACHE_DIR,
-    metavar="dir",
-    help="Store the cache data in <dir>."
-)  # type: Callable[..., Option]
-
-
-def no_cache_dir_callback(option, opt, value, parser):
-    """
-    Process a value provided for the --no-cache-dir option.
-
-    This is an optparse.Option callback for the --no-cache-dir option.
-    """
-    # The value argument will be None if --no-cache-dir is passed via the
-    # command-line, since the option doesn't accept arguments.  However,
-    # the value can be non-None if the option is triggered e.g. by an
-    # environment variable, like PIP_NO_CACHE_DIR=true.
-    if value is not None:
-        # Then parse the string value to get argument error-checking.
-        try:
-            strtobool(value)
-        except ValueError as exc:
-            raise_option_error(parser, option=option, msg=str(exc))
-
-    # Originally, setting PIP_NO_CACHE_DIR to a value that strtobool()
-    # converted to 0 (like "false" or "no") caused cache_dir to be disabled
-    # rather than enabled (logic would say the latter).  Thus, we disable
-    # the cache directory not just on values that parse to True, but (for
-    # backwards compatibility reasons) also on values that parse to False.
-    # In other words, always set it to False if the option is provided in
-    # some (valid) form.
-    parser.values.cache_dir = False
-
-
-no_cache = partial(
-    Option,
-    "--no-cache-dir",
-    dest="cache_dir",
-    action="callback",
-    callback=no_cache_dir_callback,
-    help="Disable the cache.",
-)  # type: Callable[..., Option]
-
-no_deps = partial(
-    Option,
-    '--no-deps', '--no-dependencies',
-    dest='ignore_dependencies',
-    action='store_true',
-    default=False,
-    help="Don't install package dependencies.",
-)  # type: Callable[..., Option]
-
-build_dir = partial(
-    Option,
-    '-b', '--build', '--build-dir', '--build-directory',
-    dest='build_dir',
-    metavar='dir',
-    help='Directory to unpack packages into and build in. Note that '
-         'an initial build still takes place in a temporary directory. '
-         'The location of temporary directories can be controlled by setting '
-         'the TMPDIR environment variable (TEMP on Windows) appropriately. '
-         'When passed, build directories are not cleaned in case of failures.'
-)  # type: Callable[..., Option]
-
-ignore_requires_python = partial(
-    Option,
-    '--ignore-requires-python',
-    dest='ignore_requires_python',
-    action='store_true',
-    help='Ignore the Requires-Python information.'
-)  # type: Callable[..., Option]
-
-no_build_isolation = partial(
-    Option,
-    '--no-build-isolation',
-    dest='build_isolation',
-    action='store_false',
-    default=True,
-    help='Disable isolation when building a modern source distribution. '
-         'Build dependencies specified by PEP 518 must be already installed '
-         'if this option is used.'
-)  # type: Callable[..., Option]
-
-
-def no_use_pep517_callback(option, opt, value, parser):
-    """
-    Process a value provided for the --no-use-pep517 option.
-
-    This is an optparse.Option callback for the no_use_pep517 option.
-    """
-    # Since --no-use-pep517 doesn't accept arguments, the value argument
-    # will be None if --no-use-pep517 is passed via the command-line.
-    # However, the value can be non-None if the option is triggered e.g.
-    # by an environment variable, for example "PIP_NO_USE_PEP517=true".
-    if value is not None:
-        msg = """A value was passed for --no-use-pep517,
-        probably using either the PIP_NO_USE_PEP517 environment variable
-        or the "no-use-pep517" config file option. Use an appropriate value
-        of the PIP_USE_PEP517 environment variable or the "use-pep517"
-        config file option instead.
-        """
-        raise_option_error(parser, option=option, msg=msg)
-
-    # Otherwise, --no-use-pep517 was passed via the command-line.
-    parser.values.use_pep517 = False
-
-
-use_pep517 = partial(
-    Option,
-    '--use-pep517',
-    dest='use_pep517',
-    action='store_true',
-    default=None,
-    help='Use PEP 517 for building source distributions '
-         '(use --no-use-pep517 to force legacy behaviour).'
-)  # type: Any
-
-no_use_pep517 = partial(
-    Option,
-    '--no-use-pep517',
-    dest='use_pep517',
-    action='callback',
-    callback=no_use_pep517_callback,
-    default=None,
-    help=SUPPRESS_HELP
-)  # type: Any
-
-install_options = partial(
-    Option,
-    '--install-option',
-    dest='install_options',
-    action='append',
-    metavar='options',
-    help="Extra arguments to be supplied to the setup.py install "
-         "command (use like --install-option=\"--install-scripts=/usr/local/"
-         "bin\"). Use multiple --install-option options to pass multiple "
-         "options to setup.py install. If you are using an option with a "
-         "directory path, be sure to use absolute path.",
-)  # type: Callable[..., Option]
-
-global_options = partial(
-    Option,
-    '--global-option',
-    dest='global_options',
-    action='append',
-    metavar='options',
-    help="Extra global options to be supplied to the setup.py "
-         "call before the install command.",
-)  # type: Callable[..., Option]
-
-no_clean = partial(
-    Option,
-    '--no-clean',
-    action='store_true',
-    default=False,
-    help="Don't clean up build directories."
-)  # type: Callable[..., Option]
-
-pre = partial(
-    Option,
-    '--pre',
-    action='store_true',
-    default=False,
-    help="Include pre-release and development versions. By default, "
-         "pip only finds stable versions.",
-)  # type: Callable[..., Option]
-
-disable_pip_version_check = partial(
-    Option,
-    "--disable-pip-version-check",
-    dest="disable_pip_version_check",
-    action="store_true",
-    default=False,
-    help="Don't periodically check PyPI to determine whether a new version "
-         "of pip is available for download. Implied with --no-index.",
-)  # type: Callable[..., Option]
-
-
-# Deprecated, Remove later
-always_unzip = partial(
-    Option,
-    '-Z', '--always-unzip',
-    dest='always_unzip',
-    action='store_true',
-    help=SUPPRESS_HELP,
-)  # type: Callable[..., Option]
-
-
-def _merge_hash(option, opt_str, value, parser):
-    # type: (Option, str, str, OptionParser) -> None
-    """Given a value spelled "algo:digest", append the digest to a list
-    pointed to in a dict by the algo name."""
-    if not parser.values.hashes:
-        parser.values.hashes = {}  # type: ignore
-    try:
-        algo, digest = value.split(':', 1)
-    except ValueError:
-        parser.error('Arguments to %s must be a hash name '
-                     'followed by a value, like --hash=sha256:abcde...' %
-                     opt_str)
-    if algo not in STRONG_HASHES:
-        parser.error('Allowed hash algorithms for %s are %s.' %
-                     (opt_str, ', '.join(STRONG_HASHES)))
-    parser.values.hashes.setdefault(algo, []).append(digest)
-
-
-hash = partial(
-    Option,
-    '--hash',
-    # Hash values eventually end up in InstallRequirement.hashes due to
-    # __dict__ copying in process_line().
-    dest='hashes',
-    action='callback',
-    callback=_merge_hash,
-    type='string',
-    help="Verify that the package's archive matches this "
-         'hash before installing. Example: --hash=sha256:abcdef...',
-)  # type: Callable[..., Option]
-
-
-require_hashes = partial(
-    Option,
-    '--require-hashes',
-    dest='require_hashes',
-    action='store_true',
-    default=False,
-    help='Require a hash to check each requirement against, for '
-         'repeatable installs. This option is implied when any package in a '
-         'requirements file has a --hash option.',
-)  # type: Callable[..., Option]
-
-
-##########
-# groups #
-##########
-
-general_group = {
-    'name': 'General Options',
-    'options': [
-        help_,
-        isolated_mode,
-        require_virtualenv,
-        verbose,
-        version,
-        quiet,
-        log,
-        no_input,
-        proxy,
-        retries,
-        timeout,
-        skip_requirements_regex,
-        exists_action,
-        trusted_host,
-        cert,
-        client_cert,
-        cache_dir,
-        no_cache,
-        disable_pip_version_check,
-        no_color,
-    ]
-}  # type: Dict[str, Any]
-
-index_group = {
-    'name': 'Package Index Options',
-    'options': [
-        index_url,
-        extra_index_url,
-        no_index,
-        find_links,
-    ]
-}  # type: Dict[str, Any]

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/main_parser.py

@@ -1,104 +0,0 @@
-"""A single place for constructing and exposing the main parser
-"""
-
-import os
-import sys
-
-from pip import __version__
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.parser import (
-    ConfigOptionParser, UpdatingDefaultsHelpFormatter,
-)
-from pip._internal.commands import (
-    commands_dict, get_similar_commands, get_summaries,
-)
-from pip._internal.exceptions import CommandError
-from pip._internal.utils.misc import get_prog
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Tuple, List  # noqa: F401
-
-
-__all__ = ["create_main_parser", "parse_command"]
-
-
-def create_main_parser():
-    # type: () -> ConfigOptionParser
-    """Creates and returns the main parser for pip's CLI
-    """
-
-    parser_kw = {
-        'usage': '\n%prog <command> [options]',
-        'add_help_option': False,
-        'formatter': UpdatingDefaultsHelpFormatter(),
-        'name': 'global',
-        'prog': get_prog(),
-    }
-
-    parser = ConfigOptionParser(**parser_kw)
-    parser.disable_interspersed_args()
-
-    pip_pkg_dir = os.path.abspath(os.path.join(
-        os.path.dirname(__file__), "..", "..",
-    ))
-    parser.version = 'pip %s from %s (python %s)' % (
-        __version__, pip_pkg_dir, sys.version[:3],
-    )
-
-    # add the general options
-    gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, parser)
-    parser.add_option_group(gen_opts)
-
-    # so the help formatter knows
-    parser.main = True  # type: ignore
-
-    # create command listing for description
-    command_summaries = get_summaries()
-    description = [''] + ['%-27s %s' % (i, j) for i, j in command_summaries]
-    parser.description = '\n'.join(description)
-
-    return parser
-
-
-def parse_command(args):
-    # type: (List[str]) -> Tuple[str, List[str]]
-    parser = create_main_parser()
-
-    # Note: parser calls disable_interspersed_args(), so the result of this
-    # call is to split the initial args into the general options before the
-    # subcommand and everything else.
-    # For example:
-    #  args: ['--timeout=5', 'install', '--user', 'INITools']
-    #  general_options: ['--timeout==5']
-    #  args_else: ['install', '--user', 'INITools']
-    general_options, args_else = parser.parse_args(args)
-
-    # --version
-    if general_options.version:
-        sys.stdout.write(parser.version)  # type: ignore
-        sys.stdout.write(os.linesep)
-        sys.exit()
-
-    # pip || pip help -> print_help()
-    if not args_else or (args_else[0] == 'help' and len(args_else) == 1):
-        parser.print_help()
-        sys.exit()
-
-    # the subcommand name
-    cmd_name = args_else[0]
-
-    if cmd_name not in commands_dict:
-        guess = get_similar_commands(cmd_name)
-
-        msg = ['unknown command "%s"' % cmd_name]
-        if guess:
-            msg.append('maybe you meant "%s"' % guess)
-
-        raise CommandError(' - '.join(msg))
-
-    # all the args without the subcommand
-    cmd_args = args[:]
-    cmd_args.remove(cmd_name)
-
-    return cmd_name, cmd_args

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/parser.py

@@ -1,261 +0,0 @@
-"""Base option parser setup"""
-from __future__ import absolute_import
-
-import logging
-import optparse
-import sys
-import textwrap
-from distutils.util import strtobool
-
-from pip._vendor.six import string_types
-
-from pip._internal.cli.status_codes import UNKNOWN_ERROR
-from pip._internal.configuration import Configuration, ConfigurationError
-from pip._internal.utils.compat import get_terminal_size
-
-logger = logging.getLogger(__name__)
-
-
-class PrettyHelpFormatter(optparse.IndentedHelpFormatter):
-    """A prettier/less verbose help formatter for optparse."""
-
-    def __init__(self, *args, **kwargs):
-        # help position must be aligned with __init__.parseopts.description
-        kwargs['max_help_position'] = 30
-        kwargs['indent_increment'] = 1
-        kwargs['width'] = get_terminal_size()[0] - 2
-        optparse.IndentedHelpFormatter.__init__(self, *args, **kwargs)
-
-    def format_option_strings(self, option):
-        return self._format_option_strings(option, ' <%s>', ', ')
-
-    def _format_option_strings(self, option, mvarfmt=' <%s>', optsep=', '):
-        """
-        Return a comma-separated list of option strings and metavars.
-
-        :param option:  tuple of (short opt, long opt), e.g: ('-f', '--format')
-        :param mvarfmt: metavar format string - evaluated as mvarfmt % metavar
-        :param optsep:  separator
-        """
-        opts = []
-
-        if option._short_opts:
-            opts.append(option._short_opts[0])
-        if option._long_opts:
-            opts.append(option._long_opts[0])
-        if len(opts) > 1:
-            opts.insert(1, optsep)
-
-        if option.takes_value():
-            metavar = option.metavar or option.dest.lower()
-            opts.append(mvarfmt % metavar.lower())
-
-        return ''.join(opts)
-
-    def format_heading(self, heading):
-        if heading == 'Options':
-            return ''
-        return heading + ':\n'
-
-    def format_usage(self, usage):
-        """
-        Ensure there is only one newline between usage and the first heading
-        if there is no description.
-        """
-        msg = '\nUsage: %s\n' % self.indent_lines(textwrap.dedent(usage), "  ")
-        return msg
-
-    def format_description(self, description):
-        # leave full control over description to us
-        if description:
-            if hasattr(self.parser, 'main'):
-                label = 'Commands'
-            else:
-                label = 'Description'
-            # some doc strings have initial newlines, some don't
-            description = description.lstrip('\n')
-            # some doc strings have final newlines and spaces, some don't
-            description = description.rstrip()
-            # dedent, then reindent
-            description = self.indent_lines(textwrap.dedent(description), "  ")
-            description = '%s:\n%s\n' % (label, description)
-            return description
-        else:
-            return ''
-
-    def format_epilog(self, epilog):
-        # leave full control over epilog to us
-        if epilog:
-            return epilog
-        else:
-            return ''
-
-    def indent_lines(self, text, indent):
-        new_lines = [indent + line for line in text.split('\n')]
-        return "\n".join(new_lines)
-
-
-class UpdatingDefaultsHelpFormatter(PrettyHelpFormatter):
-    """Custom help formatter for use in ConfigOptionParser.
-
-    This is updates the defaults before expanding them, allowing
-    them to show up correctly in the help listing.
-    """
-
-    def expand_default(self, option):
-        if self.parser is not None:
-            self.parser._update_defaults(self.parser.defaults)
-        return optparse.IndentedHelpFormatter.expand_default(self, option)
-
-
-class CustomOptionParser(optparse.OptionParser):
-
-    def insert_option_group(self, idx, *args, **kwargs):
-        """Insert an OptionGroup at a given position."""
-        group = self.add_option_group(*args, **kwargs)
-
-        self.option_groups.pop()
-        self.option_groups.insert(idx, group)
-
-        return group
-
-    @property
-    def option_list_all(self):
-        """Get a list of all options, including those in option groups."""
-        res = self.option_list[:]
-        for i in self.option_groups:
-            res.extend(i.option_list)
-
-        return res
-
-
-class ConfigOptionParser(CustomOptionParser):
-    """Custom option parser which updates its defaults by checking the
-    configuration files and environmental variables"""
-
-    def __init__(self, *args, **kwargs):
-        self.name = kwargs.pop('name')
-
-        isolated = kwargs.pop("isolated", False)
-        self.config = Configuration(isolated)
-
-        assert self.name
-        optparse.OptionParser.__init__(self, *args, **kwargs)
-
-    def check_default(self, option, key, val):
-        try:
-            return option.check_value(key, val)
-        except optparse.OptionValueError as exc:
-            print("An error occurred during configuration: %s" % exc)
-            sys.exit(3)
-
-    def _get_ordered_configuration_items(self):
-        # Configuration gives keys in an unordered manner. Order them.
-        override_order = ["global", self.name, ":env:"]
-
-        # Pool the options into different groups
-        section_items = {name: [] for name in override_order}
-        for section_key, val in self.config.items():
-            # ignore empty values
-            if not val:
-                logger.debug(
-                    "Ignoring configuration key '%s' as it's value is empty.",
-                    section_key
-                )
-                continue
-
-            section, key = section_key.split(".", 1)
-            if section in override_order:
-                section_items[section].append((key, val))
-
-        # Yield each group in their override order
-        for section in override_order:
-            for key, val in section_items[section]:
-                yield key, val
-
-    def _update_defaults(self, defaults):
-        """Updates the given defaults with values from the config files and
-        the environ. Does a little special handling for certain types of
-        options (lists)."""
-
-        # Accumulate complex default state.
-        self.values = optparse.Values(self.defaults)
-        late_eval = set()
-        # Then set the options with those values
-        for key, val in self._get_ordered_configuration_items():
-            # '--' because configuration supports only long names
-            option = self.get_option('--' + key)
-
-            # Ignore options not present in this parser. E.g. non-globals put
-            # in [global] by users that want them to apply to all applicable
-            # commands.
-            if option is None:
-                continue
-
-            if option.action in ('store_true', 'store_false', 'count'):
-                try:
-                    val = strtobool(val)
-                except ValueError:
-                    error_msg = invalid_config_error_message(
-                        option.action, key, val
-                    )
-                    self.error(error_msg)
-
-            elif option.action == 'append':
-                val = val.split()
-                val = [self.check_default(option, key, v) for v in val]
-            elif option.action == 'callback':
-                late_eval.add(option.dest)
-                opt_str = option.get_opt_string()
-                val = option.convert_value(opt_str, val)
-                # From take_action
-                args = option.callback_args or ()
-                kwargs = option.callback_kwargs or {}
-                option.callback(option, opt_str, val, self, *args, **kwargs)
-            else:
-                val = self.check_default(option, key, val)
-
-            defaults[option.dest] = val
-
-        for key in late_eval:
-            defaults[key] = getattr(self.values, key)
-        self.values = None
-        return defaults
-
-    def get_default_values(self):
-        """Overriding to make updating the defaults after instantiation of
-        the option parser possible, _update_defaults() does the dirty work."""
-        if not self.process_default_values:
-            # Old, pre-Optik 1.5 behaviour.
-            return optparse.Values(self.defaults)
-
-        # Load the configuration, or error out in case of an error
-        try:
-            self.config.load()
-        except ConfigurationError as err:
-            self.exit(UNKNOWN_ERROR, str(err))
-
-        defaults = self._update_defaults(self.defaults.copy())  # ours
-        for option in self._get_all_options():
-            default = defaults.get(option.dest)
-            if isinstance(default, string_types):
-                opt_str = option.get_opt_string()
-                defaults[option.dest] = option.check_value(opt_str, default)
-        return optparse.Values(defaults)
-
-    def error(self, msg):
-        self.print_usage(sys.stderr)
-        self.exit(UNKNOWN_ERROR, "%s\n" % msg)
-
-
-def invalid_config_error_message(action, key, val):
-    """Returns a better error message when invalid configuration option
-    is provided."""
-    if action in ('store_true', 'store_false'):
-        return ("{0} is not a valid value for {1} option, "
-                "please specify a boolean value like yes/no, "
-                "true/false or 1/0 instead.").format(val, key)
-
-    return ("{0} is not a valid value for {1} option, "
-            "please specify a numerical value like 1/0 "
-            "instead.").format(val, key)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/cli/status_codes.py

@@ -1,8 +0,0 @@
-from __future__ import absolute_import
-
-SUCCESS = 0
-ERROR = 1
-UNKNOWN_ERROR = 2
-VIRTUALENV_NOT_FOUND = 3
-PREVIOUS_BUILD_DIR_ERROR = 4
-NO_MATCHES_FOUND = 23

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/__init__.py

@@ -1,79 +0,0 @@
-"""
-Package containing all pip commands
-"""
-from __future__ import absolute_import
-
-from pip._internal.commands.completion import CompletionCommand
-from pip._internal.commands.configuration import ConfigurationCommand
-from pip._internal.commands.download import DownloadCommand
-from pip._internal.commands.freeze import FreezeCommand
-from pip._internal.commands.hash import HashCommand
-from pip._internal.commands.help import HelpCommand
-from pip._internal.commands.list import ListCommand
-from pip._internal.commands.check import CheckCommand
-from pip._internal.commands.search import SearchCommand
-from pip._internal.commands.show import ShowCommand
-from pip._internal.commands.install import InstallCommand
-from pip._internal.commands.uninstall import UninstallCommand
-from pip._internal.commands.wheel import WheelCommand
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import List, Type  # noqa: F401
-    from pip._internal.cli.base_command import Command  # noqa: F401
-
-commands_order = [
-    InstallCommand,
-    DownloadCommand,
-    UninstallCommand,
-    FreezeCommand,
-    ListCommand,
-    ShowCommand,
-    CheckCommand,
-    ConfigurationCommand,
-    SearchCommand,
-    WheelCommand,
-    HashCommand,
-    CompletionCommand,
-    HelpCommand,
-]  # type: List[Type[Command]]
-
-commands_dict = {c.name: c for c in commands_order}
-
-
-def get_summaries(ordered=True):
-    """Yields sorted (command name, command summary) tuples."""
-
-    if ordered:
-        cmditems = _sort_commands(commands_dict, commands_order)
-    else:
-        cmditems = commands_dict.items()
-
-    for name, command_class in cmditems:
-        yield (name, command_class.summary)
-
-
-def get_similar_commands(name):
-    """Command name auto-correct."""
-    from difflib import get_close_matches
-
-    name = name.lower()
-
-    close_commands = get_close_matches(name, commands_dict.keys())
-
-    if close_commands:
-        return close_commands[0]
-    else:
-        return False
-
-
-def _sort_commands(cmddict, order):
-    def keyfn(key):
-        try:
-            return order.index(key[1])
-        except ValueError:
-            # unordered items should come last
-            return 0xff
-
-    return sorted(cmddict.items(), key=keyfn)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/check.py

@@ -1,41 +0,0 @@
-import logging
-
-from pip._internal.cli.base_command import Command
-from pip._internal.operations.check import (
-    check_package_set, create_package_set_from_installed,
-)
-
-logger = logging.getLogger(__name__)
-
-
-class CheckCommand(Command):
-    """Verify installed packages have compatible dependencies."""
-    name = 'check'
-    usage = """
-      %prog [options]"""
-    summary = 'Verify installed packages have compatible dependencies.'
-
-    def run(self, options, args):
-        package_set, parsing_probs = create_package_set_from_installed()
-        missing, conflicting = check_package_set(package_set)
-
-        for project_name in missing:
-            version = package_set[project_name].version
-            for dependency in missing[project_name]:
-                logger.info(
-                    "%s %s requires %s, which is not installed.",
-                    project_name, version, dependency[0],
-                )
-
-        for project_name in conflicting:
-            version = package_set[project_name].version
-            for dep_name, dep_version, req in conflicting[project_name]:
-                logger.info(
-                    "%s %s has requirement %s, but you have %s %s.",
-                    project_name, version, req, dep_name, dep_version,
-                )
-
-        if missing or conflicting or parsing_probs:
-            return 1
-        else:
-            logger.info("No broken requirements found.")

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/completion.py

@@ -1,94 +0,0 @@
-from __future__ import absolute_import
-
-import sys
-import textwrap
-
-from pip._internal.cli.base_command import Command
-from pip._internal.utils.misc import get_prog
-
-BASE_COMPLETION = """
-# pip %(shell)s completion start%(script)s# pip %(shell)s completion end
-"""
-
-COMPLETION_SCRIPTS = {
-    'bash': """
-        _pip_completion()
-        {
-            COMPREPLY=( $( COMP_WORDS="${COMP_WORDS[*]}" \\
-                           COMP_CWORD=$COMP_CWORD \\
-                           PIP_AUTO_COMPLETE=1 $1 ) )
-        }
-        complete -o default -F _pip_completion %(prog)s
-    """,
-    'zsh': """
-        function _pip_completion {
-          local words cword
-          read -Ac words
-          read -cn cword
-          reply=( $( COMP_WORDS="$words[*]" \\
-                     COMP_CWORD=$(( cword-1 )) \\
-                     PIP_AUTO_COMPLETE=1 $words[1] ) )
-        }
-        compctl -K _pip_completion %(prog)s
-    """,
-    'fish': """
-        function __fish_complete_pip
-            set -lx COMP_WORDS (commandline -o) ""
-            set -lx COMP_CWORD ( \\
-                math (contains -i -- (commandline -t) $COMP_WORDS)-1 \\
-            )
-            set -lx PIP_AUTO_COMPLETE 1
-            string split \\  -- (eval $COMP_WORDS[1])
-        end
-        complete -fa "(__fish_complete_pip)" -c %(prog)s
-    """,
-}
-
-
-class CompletionCommand(Command):
-    """A helper command to be used for command completion."""
-    name = 'completion'
-    summary = 'A helper command used for command completion.'
-    ignore_require_venv = True
-
-    def __init__(self, *args, **kw):
-        super(CompletionCommand, self).__init__(*args, **kw)
-
-        cmd_opts = self.cmd_opts
-
-        cmd_opts.add_option(
-            '--bash', '-b',
-            action='store_const',
-            const='bash',
-            dest='shell',
-            help='Emit completion code for bash')
-        cmd_opts.add_option(
-            '--zsh', '-z',
-            action='store_const',
-            const='zsh',
-            dest='shell',
-            help='Emit completion code for zsh')
-        cmd_opts.add_option(
-            '--fish', '-f',
-            action='store_const',
-            const='fish',
-            dest='shell',
-            help='Emit completion code for fish')
-
-        self.parser.insert_option_group(0, cmd_opts)
-
-    def run(self, options, args):
-        """Prints the completion code of the given shell"""
-        shells = COMPLETION_SCRIPTS.keys()
-        shell_options = ['--' + shell for shell in sorted(shells)]
-        if options.shell in shells:
-            script = textwrap.dedent(
-                COMPLETION_SCRIPTS.get(options.shell, '') % {
-                    'prog': get_prog(),
-                }
-            )
-            print(BASE_COMPLETION % {'script': script, 'shell': options.shell})
-        else:
-            sys.stderr.write(
-                'ERROR: You must pass %s\n' % ' or '.join(shell_options)
-            )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/configuration.py

@@ -1,227 +0,0 @@
-import logging
-import os
-import subprocess
-
-from pip._internal.cli.base_command import Command
-from pip._internal.cli.status_codes import ERROR, SUCCESS
-from pip._internal.configuration import Configuration, kinds
-from pip._internal.exceptions import PipError
-from pip._internal.locations import venv_config_file
-from pip._internal.utils.misc import get_prog
-
-logger = logging.getLogger(__name__)
-
-
-class ConfigurationCommand(Command):
-    """Manage local and global configuration.
-
-        Subcommands:
-
-        list: List the active configuration (or from the file specified)
-        edit: Edit the configuration file in an editor
-        get: Get the value associated with name
-        set: Set the name=value
-        unset: Unset the value associated with name
-
-        If none of --user, --global and --venv are passed, a virtual
-        environment configuration file is used if one is active and the file
-        exists. Otherwise, all modifications happen on the to the user file by
-        default.
-    """
-
-    name = 'config'
-    usage = """
-        %prog [<file-option>] list
-        %prog [<file-option>] [--editor <editor-path>] edit
-
-        %prog [<file-option>] get name
-        %prog [<file-option>] set name value
-        %prog [<file-option>] unset name
-    """
-
-    summary = "Manage local and global configuration."
-
-    def __init__(self, *args, **kwargs):
-        super(ConfigurationCommand, self).__init__(*args, **kwargs)
-
-        self.configuration = None
-
-        self.cmd_opts.add_option(
-            '--editor',
-            dest='editor',
-            action='store',
-            default=None,
-            help=(
-                'Editor to use to edit the file. Uses VISUAL or EDITOR '
-                'environment variables if not provided.'
-            )
-        )
-
-        self.cmd_opts.add_option(
-            '--global',
-            dest='global_file',
-            action='store_true',
-            default=False,
-            help='Use the system-wide configuration file only'
-        )
-
-        self.cmd_opts.add_option(
-            '--user',
-            dest='user_file',
-            action='store_true',
-            default=False,
-            help='Use the user configuration file only'
-        )
-
-        self.cmd_opts.add_option(
-            '--venv',
-            dest='venv_file',
-            action='store_true',
-            default=False,
-            help='Use the virtualenv configuration file only'
-        )
-
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        handlers = {
-            "list": self.list_values,
-            "edit": self.open_in_editor,
-            "get": self.get_name,
-            "set": self.set_name_value,
-            "unset": self.unset_name
-        }
-
-        # Determine action
-        if not args or args[0] not in handlers:
-            logger.error("Need an action ({}) to perform.".format(
-                ", ".join(sorted(handlers)))
-            )
-            return ERROR
-
-        action = args[0]
-
-        # Determine which configuration files are to be loaded
-        #    Depends on whether the command is modifying.
-        try:
-            load_only = self._determine_file(
-                options, need_value=(action in ["get", "set", "unset", "edit"])
-            )
-        except PipError as e:
-            logger.error(e.args[0])
-            return ERROR
-
-        # Load a new configuration
-        self.configuration = Configuration(
-            isolated=options.isolated_mode, load_only=load_only
-        )
-        self.configuration.load()
-
-        # Error handling happens here, not in the action-handlers.
-        try:
-            handlers[action](options, args[1:])
-        except PipError as e:
-            logger.error(e.args[0])
-            return ERROR
-
-        return SUCCESS
-
-    def _determine_file(self, options, need_value):
-        file_options = {
-            kinds.USER: options.user_file,
-            kinds.GLOBAL: options.global_file,
-            kinds.VENV: options.venv_file
-        }
-
-        if sum(file_options.values()) == 0:
-            if not need_value:
-                return None
-            # Default to user, unless there's a virtualenv file.
-            elif os.path.exists(venv_config_file):
-                return kinds.VENV
-            else:
-                return kinds.USER
-        elif sum(file_options.values()) == 1:
-            # There's probably a better expression for this.
-            return [key for key in file_options if file_options[key]][0]
-
-        raise PipError(
-            "Need exactly one file to operate upon "
-            "(--user, --venv, --global) to perform."
-        )
-
-    def list_values(self, options, args):
-        self._get_n_args(args, "list", n=0)
-
-        for key, value in sorted(self.configuration.items()):
-            logger.info("%s=%r", key, value)
-
-    def get_name(self, options, args):
-        key = self._get_n_args(args, "get [name]", n=1)
-        value = self.configuration.get_value(key)
-
-        logger.info("%s", value)
-
-    def set_name_value(self, options, args):
-        key, value = self._get_n_args(args, "set [name] [value]", n=2)
-        self.configuration.set_value(key, value)
-
-        self._save_configuration()
-
-    def unset_name(self, options, args):
-        key = self._get_n_args(args, "unset [name]", n=1)
-        self.configuration.unset_value(key)
-
-        self._save_configuration()
-
-    def open_in_editor(self, options, args):
-        editor = self._determine_editor(options)
-
-        fname = self.configuration.get_file_to_edit()
-        if fname is None:
-            raise PipError("Could not determine appropriate file.")
-
-        try:
-            subprocess.check_call([editor, fname])
-        except subprocess.CalledProcessError as e:
-            raise PipError(
-                "Editor Subprocess exited with exit code {}"
-                .format(e.returncode)
-            )
-
-    def _get_n_args(self, args, example, n):
-        """Helper to make sure the command got the right number of arguments
-        """
-        if len(args) != n:
-            msg = (
-                'Got unexpected number of arguments, expected {}. '
-                '(example: "{} config {}")'
-            ).format(n, get_prog(), example)
-            raise PipError(msg)
-
-        if n == 1:
-            return args[0]
-        else:
-            return args
-
-    def _save_configuration(self):
-        # We successfully ran a modifying command. Need to save the
-        # configuration.
-        try:
-            self.configuration.save()
-        except Exception:
-            logger.error(
-                "Unable to save configuration. Please report this as a bug.",
-                exc_info=1
-            )
-            raise PipError("Internal Error.")
-
-    def _determine_editor(self, options):
-        if options.editor is not None:
-            return options.editor
-        elif "VISUAL" in os.environ:
-            return os.environ["VISUAL"]
-        elif "EDITOR" in os.environ:
-            return os.environ["EDITOR"]
-        else:
-            raise PipError("Could not determine editor to use.")

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/download.py

@@ -1,176 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-import os
-
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.base_command import RequirementCommand
-from pip._internal.operations.prepare import RequirementPreparer
-from pip._internal.req import RequirementSet
-from pip._internal.req.req_tracker import RequirementTracker
-from pip._internal.resolve import Resolver
-from pip._internal.utils.filesystem import check_path_owner
-from pip._internal.utils.misc import ensure_dir, normalize_path
-from pip._internal.utils.temp_dir import TempDirectory
-
-logger = logging.getLogger(__name__)
-
-
-class DownloadCommand(RequirementCommand):
-    """
-    Download packages from:
-
-    - PyPI (and other indexes) using requirement specifiers.
-    - VCS project urls.
-    - Local project directories.
-    - Local or remote source archives.
-
-    pip also supports downloading from "requirements files", which provide
-    an easy way to specify a whole environment to be downloaded.
-    """
-    name = 'download'
-
-    usage = """
-      %prog [options] <requirement specifier> [package-index-options] ...
-      %prog [options] -r <requirements file> [package-index-options] ...
-      %prog [options] <vcs project url> ...
-      %prog [options] <local project path> ...
-      %prog [options] <archive url/path> ..."""
-
-    summary = 'Download packages.'
-
-    def __init__(self, *args, **kw):
-        super(DownloadCommand, self).__init__(*args, **kw)
-
-        cmd_opts = self.cmd_opts
-
-        cmd_opts.add_option(cmdoptions.constraints())
-        cmd_opts.add_option(cmdoptions.requirements())
-        cmd_opts.add_option(cmdoptions.build_dir())
-        cmd_opts.add_option(cmdoptions.no_deps())
-        cmd_opts.add_option(cmdoptions.global_options())
-        cmd_opts.add_option(cmdoptions.no_binary())
-        cmd_opts.add_option(cmdoptions.only_binary())
-        cmd_opts.add_option(cmdoptions.prefer_binary())
-        cmd_opts.add_option(cmdoptions.src())
-        cmd_opts.add_option(cmdoptions.pre())
-        cmd_opts.add_option(cmdoptions.no_clean())
-        cmd_opts.add_option(cmdoptions.require_hashes())
-        cmd_opts.add_option(cmdoptions.progress_bar())
-        cmd_opts.add_option(cmdoptions.no_build_isolation())
-        cmd_opts.add_option(cmdoptions.use_pep517())
-        cmd_opts.add_option(cmdoptions.no_use_pep517())
-
-        cmd_opts.add_option(
-            '-d', '--dest', '--destination-dir', '--destination-directory',
-            dest='download_dir',
-            metavar='dir',
-            default=os.curdir,
-            help=("Download packages into <dir>."),
-        )
-
-        cmd_opts.add_option(cmdoptions.platform())
-        cmd_opts.add_option(cmdoptions.python_version())
-        cmd_opts.add_option(cmdoptions.implementation())
-        cmd_opts.add_option(cmdoptions.abi())
-
-        index_opts = cmdoptions.make_option_group(
-            cmdoptions.index_group,
-            self.parser,
-        )
-
-        self.parser.insert_option_group(0, index_opts)
-        self.parser.insert_option_group(0, cmd_opts)
-
-    def run(self, options, args):
-        options.ignore_installed = True
-        # editable doesn't really make sense for `pip download`, but the bowels
-        # of the RequirementSet code require that property.
-        options.editables = []
-
-        if options.python_version:
-            python_versions = [options.python_version]
-        else:
-            python_versions = None
-
-        cmdoptions.check_dist_restriction(options)
-
-        options.src_dir = os.path.abspath(options.src_dir)
-        options.download_dir = normalize_path(options.download_dir)
-
-        ensure_dir(options.download_dir)
-
-        with self._build_session(options) as session:
-            finder = self._build_package_finder(
-                options=options,
-                session=session,
-                platform=options.platform,
-                python_versions=python_versions,
-                abi=options.abi,
-                implementation=options.implementation,
-            )
-            build_delete = (not (options.no_clean or options.build_dir))
-            if options.cache_dir and not check_path_owner(options.cache_dir):
-                logger.warning(
-                    "The directory '%s' or its parent directory is not owned "
-                    "by the current user and caching wheels has been "
-                    "disabled. check the permissions and owner of that "
-                    "directory. If executing pip with sudo, you may want "
-                    "sudo's -H flag.",
-                    options.cache_dir,
-                )
-                options.cache_dir = None
-
-            with RequirementTracker() as req_tracker, TempDirectory(
-                options.build_dir, delete=build_delete, kind="download"
-            ) as directory:
-
-                requirement_set = RequirementSet(
-                    require_hashes=options.require_hashes,
-                )
-                self.populate_requirement_set(
-                    requirement_set,
-                    args,
-                    options,
-                    finder,
-                    session,
-                    self.name,
-                    None
-                )
-
-                preparer = RequirementPreparer(
-                    build_dir=directory.path,
-                    src_dir=options.src_dir,
-                    download_dir=options.download_dir,
-                    wheel_download_dir=None,
-                    progress_bar=options.progress_bar,
-                    build_isolation=options.build_isolation,
-                    req_tracker=req_tracker,
-                )
-
-                resolver = Resolver(
-                    preparer=preparer,
-                    finder=finder,
-                    session=session,
-                    wheel_cache=None,
-                    use_user_site=False,
-                    upgrade_strategy="to-satisfy-only",
-                    force_reinstall=False,
-                    ignore_dependencies=options.ignore_dependencies,
-                    ignore_requires_python=False,
-                    ignore_installed=True,
-                    isolated=options.isolated_mode,
-                )
-                resolver.resolve(requirement_set)
-
-                downloaded = ' '.join([
-                    req.name for req in requirement_set.successfully_downloaded
-                ])
-                if downloaded:
-                    logger.info('Successfully downloaded %s', downloaded)
-
-                # Clean up
-                if not options.no_clean:
-                    requirement_set.cleanup_files()
-
-        return requirement_set

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/freeze.py

@@ -1,96 +0,0 @@
-from __future__ import absolute_import
-
-import sys
-
-from pip._internal.cache import WheelCache
-from pip._internal.cli.base_command import Command
-from pip._internal.models.format_control import FormatControl
-from pip._internal.operations.freeze import freeze
-from pip._internal.utils.compat import stdlib_pkgs
-
-DEV_PKGS = {'pip', 'setuptools', 'distribute', 'wheel'}
-
-
-class FreezeCommand(Command):
-    """
-    Output installed packages in requirements format.
-
-    packages are listed in a case-insensitive sorted order.
-    """
-    name = 'freeze'
-    usage = """
-      %prog [options]"""
-    summary = 'Output installed packages in requirements format.'
-    log_streams = ("ext://sys.stderr", "ext://sys.stderr")
-
-    def __init__(self, *args, **kw):
-        super(FreezeCommand, self).__init__(*args, **kw)
-
-        self.cmd_opts.add_option(
-            '-r', '--requirement',
-            dest='requirements',
-            action='append',
-            default=[],
-            metavar='file',
-            help="Use the order in the given requirements file and its "
-                 "comments when generating output. This option can be "
-                 "used multiple times.")
-        self.cmd_opts.add_option(
-            '-f', '--find-links',
-            dest='find_links',
-            action='append',
-            default=[],
-            metavar='URL',
-            help='URL for finding packages, which will be added to the '
-                 'output.')
-        self.cmd_opts.add_option(
-            '-l', '--local',
-            dest='local',
-            action='store_true',
-            default=False,
-            help='If in a virtualenv that has global access, do not output '
-                 'globally-installed packages.')
-        self.cmd_opts.add_option(
-            '--user',
-            dest='user',
-            action='store_true',
-            default=False,
-            help='Only output packages installed in user-site.')
-        self.cmd_opts.add_option(
-            '--all',
-            dest='freeze_all',
-            action='store_true',
-            help='Do not skip these packages in the output:'
-                 ' %s' % ', '.join(DEV_PKGS))
-        self.cmd_opts.add_option(
-            '--exclude-editable',
-            dest='exclude_editable',
-            action='store_true',
-            help='Exclude editable package from output.')
-
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        format_control = FormatControl(set(), set())
-        wheel_cache = WheelCache(options.cache_dir, format_control)
-        skip = set(stdlib_pkgs)
-        if not options.freeze_all:
-            skip.update(DEV_PKGS)
-
-        freeze_kwargs = dict(
-            requirement=options.requirements,
-            find_links=options.find_links,
-            local_only=options.local,
-            user_only=options.user,
-            skip_regex=options.skip_requirements_regex,
-            isolated=options.isolated_mode,
-            wheel_cache=wheel_cache,
-            skip=skip,
-            exclude_editable=options.exclude_editable,
-        )
-
-        try:
-            for line in freeze(**freeze_kwargs):
-                sys.stdout.write(line + '\n')
-        finally:
-            wheel_cache.cleanup()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/hash.py

@@ -1,57 +0,0 @@
-from __future__ import absolute_import
-
-import hashlib
-import logging
-import sys
-
-from pip._internal.cli.base_command import Command
-from pip._internal.cli.status_codes import ERROR
-from pip._internal.utils.hashes import FAVORITE_HASH, STRONG_HASHES
-from pip._internal.utils.misc import read_chunks
-
-logger = logging.getLogger(__name__)
-
-
-class HashCommand(Command):
-    """
-    Compute a hash of a local package archive.
-
-    These can be used with --hash in a requirements file to do repeatable
-    installs.
-
-    """
-    name = 'hash'
-    usage = '%prog [options] <file> ...'
-    summary = 'Compute hashes of package archives.'
-    ignore_require_venv = True
-
-    def __init__(self, *args, **kw):
-        super(HashCommand, self).__init__(*args, **kw)
-        self.cmd_opts.add_option(
-            '-a', '--algorithm',
-            dest='algorithm',
-            choices=STRONG_HASHES,
-            action='store',
-            default=FAVORITE_HASH,
-            help='The hash algorithm to use: one of %s' %
-                 ', '.join(STRONG_HASHES))
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        if not args:
-            self.parser.print_usage(sys.stderr)
-            return ERROR
-
-        algorithm = options.algorithm
-        for path in args:
-            logger.info('%s:\n--hash=%s:%s',
-                        path, algorithm, _hash_of_file(path, algorithm))
-
-
-def _hash_of_file(path, algorithm):
-    """Return the hash digest of a file."""
-    with open(path, 'rb') as archive:
-        hash = hashlib.new(algorithm)
-        for chunk in read_chunks(archive):
-            hash.update(chunk)
-    return hash.hexdigest()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/help.py

@@ -1,37 +0,0 @@
-from __future__ import absolute_import
-
-from pip._internal.cli.base_command import Command
-from pip._internal.cli.status_codes import SUCCESS
-from pip._internal.exceptions import CommandError
-
-
-class HelpCommand(Command):
-    """Show help for commands"""
-    name = 'help'
-    usage = """
-      %prog <command>"""
-    summary = 'Show help for commands.'
-    ignore_require_venv = True
-
-    def run(self, options, args):
-        from pip._internal.commands import commands_dict, get_similar_commands
-
-        try:
-            # 'pip help' with no args is handled by pip.__init__.parseopt()
-            cmd_name = args[0]  # the command we need help for
-        except IndexError:
-            return SUCCESS
-
-        if cmd_name not in commands_dict:
-            guess = get_similar_commands(cmd_name)
-
-            msg = ['unknown command "%s"' % cmd_name]
-            if guess:
-                msg.append('maybe you meant "%s"' % guess)
-
-            raise CommandError(' - '.join(msg))
-
-        command = commands_dict[cmd_name]()
-        command.parser.print_help()
-
-        return SUCCESS

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/install.py

@@ -1,566 +0,0 @@
-from __future__ import absolute_import
-
-import errno
-import logging
-import operator
-import os
-import shutil
-from optparse import SUPPRESS_HELP
-
-from pip._vendor import pkg_resources
-
-from pip._internal.cache import WheelCache
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.base_command import RequirementCommand
-from pip._internal.cli.status_codes import ERROR
-from pip._internal.exceptions import (
-    CommandError, InstallationError, PreviousBuildDirError,
-)
-from pip._internal.locations import distutils_scheme, virtualenv_no_global
-from pip._internal.operations.check import check_install_conflicts
-from pip._internal.operations.prepare import RequirementPreparer
-from pip._internal.req import RequirementSet, install_given_reqs
-from pip._internal.req.req_tracker import RequirementTracker
-from pip._internal.resolve import Resolver
-from pip._internal.utils.filesystem import check_path_owner
-from pip._internal.utils.misc import (
-    ensure_dir, get_installed_version,
-    protect_pip_from_modification_on_windows,
-)
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.wheel import WheelBuilder
-
-logger = logging.getLogger(__name__)
-
-
-class InstallCommand(RequirementCommand):
-    """
-    Install packages from:
-
-    - PyPI (and other indexes) using requirement specifiers.
-    - VCS project urls.
-    - Local project directories.
-    - Local or remote source archives.
-
-    pip also supports installing from "requirements files", which provide
-    an easy way to specify a whole environment to be installed.
-    """
-    name = 'install'
-
-    usage = """
-      %prog [options] <requirement specifier> [package-index-options] ...
-      %prog [options] -r <requirements file> [package-index-options] ...
-      %prog [options] [-e] <vcs project url> ...
-      %prog [options] [-e] <local project path> ...
-      %prog [options] <archive url/path> ..."""
-
-    summary = 'Install packages.'
-
-    def __init__(self, *args, **kw):
-        super(InstallCommand, self).__init__(*args, **kw)
-
-        cmd_opts = self.cmd_opts
-
-        cmd_opts.add_option(cmdoptions.requirements())
-        cmd_opts.add_option(cmdoptions.constraints())
-        cmd_opts.add_option(cmdoptions.no_deps())
-        cmd_opts.add_option(cmdoptions.pre())
-
-        cmd_opts.add_option(cmdoptions.editable())
-        cmd_opts.add_option(
-            '-t', '--target',
-            dest='target_dir',
-            metavar='dir',
-            default=None,
-            help='Install packages into <dir>. '
-                 'By default this will not replace existing files/folders in '
-                 '<dir>. Use --upgrade to replace existing packages in <dir> '
-                 'with new versions.'
-        )
-        cmd_opts.add_option(cmdoptions.platform())
-        cmd_opts.add_option(cmdoptions.python_version())
-        cmd_opts.add_option(cmdoptions.implementation())
-        cmd_opts.add_option(cmdoptions.abi())
-
-        cmd_opts.add_option(
-            '--user',
-            dest='use_user_site',
-            action='store_true',
-            help="Install to the Python user install directory for your "
-                 "platform. Typically ~/.local/, or %APPDATA%\\Python on "
-                 "Windows. (See the Python documentation for site.USER_BASE "
-                 "for full details.)")
-        cmd_opts.add_option(
-            '--no-user',
-            dest='use_user_site',
-            action='store_false',
-            help=SUPPRESS_HELP)
-        cmd_opts.add_option(
-            '--root',
-            dest='root_path',
-            metavar='dir',
-            default=None,
-            help="Install everything relative to this alternate root "
-                 "directory.")
-        cmd_opts.add_option(
-            '--prefix',
-            dest='prefix_path',
-            metavar='dir',
-            default=None,
-            help="Installation prefix where lib, bin and other top-level "
-                 "folders are placed")
-
-        cmd_opts.add_option(cmdoptions.build_dir())
-
-        cmd_opts.add_option(cmdoptions.src())
-
-        cmd_opts.add_option(
-            '-U', '--upgrade',
-            dest='upgrade',
-            action='store_true',
-            help='Upgrade all specified packages to the newest available '
-                 'version. The handling of dependencies depends on the '
-                 'upgrade-strategy used.'
-        )
-
-        cmd_opts.add_option(
-            '--upgrade-strategy',
-            dest='upgrade_strategy',
-            default='only-if-needed',
-            choices=['only-if-needed', 'eager'],
-            help='Determines how dependency upgrading should be handled '
-                 '[default: %default]. '
-                 '"eager" - dependencies are upgraded regardless of '
-                 'whether the currently installed version satisfies the '
-                 'requirements of the upgraded package(s). '
-                 '"only-if-needed" -  are upgraded only when they do not '
-                 'satisfy the requirements of the upgraded package(s).'
-        )
-
-        cmd_opts.add_option(
-            '--force-reinstall',
-            dest='force_reinstall',
-            action='store_true',
-            help='Reinstall all packages even if they are already '
-                 'up-to-date.')
-
-        cmd_opts.add_option(
-            '-I', '--ignore-installed',
-            dest='ignore_installed',
-            action='store_true',
-            help='Ignore the installed packages (reinstalling instead).')
-
-        cmd_opts.add_option(cmdoptions.ignore_requires_python())
-        cmd_opts.add_option(cmdoptions.no_build_isolation())
-        cmd_opts.add_option(cmdoptions.use_pep517())
-        cmd_opts.add_option(cmdoptions.no_use_pep517())
-
-        cmd_opts.add_option(cmdoptions.install_options())
-        cmd_opts.add_option(cmdoptions.global_options())
-
-        cmd_opts.add_option(
-            "--compile",
-            action="store_true",
-            dest="compile",
-            default=True,
-            help="Compile Python source files to bytecode",
-        )
-
-        cmd_opts.add_option(
-            "--no-compile",
-            action="store_false",
-            dest="compile",
-            help="Do not compile Python source files to bytecode",
-        )
-
-        cmd_opts.add_option(
-            "--no-warn-script-location",
-            action="store_false",
-            dest="warn_script_location",
-            default=True,
-            help="Do not warn when installing scripts outside PATH",
-        )
-        cmd_opts.add_option(
-            "--no-warn-conflicts",
-            action="store_false",
-            dest="warn_about_conflicts",
-            default=True,
-            help="Do not warn about broken dependencies",
-        )
-
-        cmd_opts.add_option(cmdoptions.no_binary())
-        cmd_opts.add_option(cmdoptions.only_binary())
-        cmd_opts.add_option(cmdoptions.prefer_binary())
-        cmd_opts.add_option(cmdoptions.no_clean())
-        cmd_opts.add_option(cmdoptions.require_hashes())
-        cmd_opts.add_option(cmdoptions.progress_bar())
-
-        index_opts = cmdoptions.make_option_group(
-            cmdoptions.index_group,
-            self.parser,
-        )
-
-        self.parser.insert_option_group(0, index_opts)
-        self.parser.insert_option_group(0, cmd_opts)
-
-    def run(self, options, args):
-        cmdoptions.check_install_build_global(options)
-        upgrade_strategy = "to-satisfy-only"
-        if options.upgrade:
-            upgrade_strategy = options.upgrade_strategy
-
-        if options.build_dir:
-            options.build_dir = os.path.abspath(options.build_dir)
-
-        cmdoptions.check_dist_restriction(options, check_target=True)
-
-        if options.python_version:
-            python_versions = [options.python_version]
-        else:
-            python_versions = None
-
-        options.src_dir = os.path.abspath(options.src_dir)
-        install_options = options.install_options or []
-        if options.use_user_site:
-            if options.prefix_path:
-                raise CommandError(
-                    "Can not combine '--user' and '--prefix' as they imply "
-                    "different installation locations"
-                )
-            if virtualenv_no_global():
-                raise InstallationError(
-                    "Can not perform a '--user' install. User site-packages "
-                    "are not visible in this virtualenv."
-                )
-            install_options.append('--user')
-            install_options.append('--prefix=')
-
-        target_temp_dir = TempDirectory(kind="target")
-        if options.target_dir:
-            options.ignore_installed = True
-            options.target_dir = os.path.abspath(options.target_dir)
-            if (os.path.exists(options.target_dir) and not
-                    os.path.isdir(options.target_dir)):
-                raise CommandError(
-                    "Target path exists but is not a directory, will not "
-                    "continue."
-                )
-
-            # Create a target directory for using with the target option
-            target_temp_dir.create()
-            install_options.append('--home=' + target_temp_dir.path)
-
-        global_options = options.global_options or []
-
-        with self._build_session(options) as session:
-            finder = self._build_package_finder(
-                options=options,
-                session=session,
-                platform=options.platform,
-                python_versions=python_versions,
-                abi=options.abi,
-                implementation=options.implementation,
-            )
-            build_delete = (not (options.no_clean or options.build_dir))
-            wheel_cache = WheelCache(options.cache_dir, options.format_control)
-
-            if options.cache_dir and not check_path_owner(options.cache_dir):
-                logger.warning(
-                    "The directory '%s' or its parent directory is not owned "
-                    "by the current user and caching wheels has been "
-                    "disabled. check the permissions and owner of that "
-                    "directory. If executing pip with sudo, you may want "
-                    "sudo's -H flag.",
-                    options.cache_dir,
-                )
-                options.cache_dir = None
-
-            with RequirementTracker() as req_tracker, TempDirectory(
-                options.build_dir, delete=build_delete, kind="install"
-            ) as directory:
-                requirement_set = RequirementSet(
-                    require_hashes=options.require_hashes,
-                    check_supported_wheels=not options.target_dir,
-                )
-
-                try:
-                    self.populate_requirement_set(
-                        requirement_set, args, options, finder, session,
-                        self.name, wheel_cache
-                    )
-                    preparer = RequirementPreparer(
-                        build_dir=directory.path,
-                        src_dir=options.src_dir,
-                        download_dir=None,
-                        wheel_download_dir=None,
-                        progress_bar=options.progress_bar,
-                        build_isolation=options.build_isolation,
-                        req_tracker=req_tracker,
-                    )
-
-                    resolver = Resolver(
-                        preparer=preparer,
-                        finder=finder,
-                        session=session,
-                        wheel_cache=wheel_cache,
-                        use_user_site=options.use_user_site,
-                        upgrade_strategy=upgrade_strategy,
-                        force_reinstall=options.force_reinstall,
-                        ignore_dependencies=options.ignore_dependencies,
-                        ignore_requires_python=options.ignore_requires_python,
-                        ignore_installed=options.ignore_installed,
-                        isolated=options.isolated_mode,
-                        use_pep517=options.use_pep517
-                    )
-                    resolver.resolve(requirement_set)
-
-                    protect_pip_from_modification_on_windows(
-                        modifying_pip=requirement_set.has_requirement("pip")
-                    )
-
-                    # Consider legacy and PEP517-using requirements separately
-                    legacy_requirements = []
-                    pep517_requirements = []
-                    for req in requirement_set.requirements.values():
-                        if req.use_pep517:
-                            pep517_requirements.append(req)
-                        else:
-                            legacy_requirements.append(req)
-
-                    # We don't build wheels for legacy requirements if we
-                    # don't have wheel installed or we don't have a cache dir
-                    try:
-                        import wheel  # noqa: F401
-                        build_legacy = bool(options.cache_dir)
-                    except ImportError:
-                        build_legacy = False
-
-                    wb = WheelBuilder(
-                        finder, preparer, wheel_cache,
-                        build_options=[], global_options=[],
-                    )
-
-                    # Always build PEP 517 requirements
-                    build_failures = wb.build(
-                        pep517_requirements,
-                        session=session, autobuilding=True
-                    )
-
-                    if build_legacy:
-                        # We don't care about failures building legacy
-                        # requirements, as we'll fall through to a direct
-                        # install for those.
-                        wb.build(
-                            legacy_requirements,
-                            session=session, autobuilding=True
-                        )
-
-                    # If we're using PEP 517, we cannot do a direct install
-                    # so we fail here.
-                    if build_failures:
-                        raise InstallationError(
-                            "Could not build wheels for {} which use"
-                            " PEP 517 and cannot be installed directly".format(
-                                ", ".join(r.name for r in build_failures)))
-
-                    to_install = resolver.get_installation_order(
-                        requirement_set
-                    )
-
-                    # Consistency Checking of the package set we're installing.
-                    should_warn_about_conflicts = (
-                        not options.ignore_dependencies and
-                        options.warn_about_conflicts
-                    )
-                    if should_warn_about_conflicts:
-                        self._warn_about_conflicts(to_install)
-
-                    # Don't warn about script install locations if
-                    # --target has been specified
-                    warn_script_location = options.warn_script_location
-                    if options.target_dir:
-                        warn_script_location = False
-
-                    installed = install_given_reqs(
-                        to_install,
-                        install_options,
-                        global_options,
-                        root=options.root_path,
-                        home=target_temp_dir.path,
-                        prefix=options.prefix_path,
-                        pycompile=options.compile,
-                        warn_script_location=warn_script_location,
-                        use_user_site=options.use_user_site,
-                    )
-
-                    lib_locations = get_lib_location_guesses(
-                        user=options.use_user_site,
-                        home=target_temp_dir.path,
-                        root=options.root_path,
-                        prefix=options.prefix_path,
-                        isolated=options.isolated_mode,
-                    )
-                    working_set = pkg_resources.WorkingSet(lib_locations)
-
-                    reqs = sorted(installed, key=operator.attrgetter('name'))
-                    items = []
-                    for req in reqs:
-                        item = req.name
-                        try:
-                            installed_version = get_installed_version(
-                                req.name, working_set=working_set
-                            )
-                            if installed_version:
-                                item += '-' + installed_version
-                        except Exception:
-                            pass
-                        items.append(item)
-                    installed = ' '.join(items)
-                    if installed:
-                        logger.info('Successfully installed %s', installed)
-                except EnvironmentError as error:
-                    show_traceback = (self.verbosity >= 1)
-
-                    message = create_env_error_message(
-                        error, show_traceback, options.use_user_site,
-                    )
-                    logger.error(message, exc_info=show_traceback)
-
-                    return ERROR
-                except PreviousBuildDirError:
-                    options.no_clean = True
-                    raise
-                finally:
-                    # Clean up
-                    if not options.no_clean:
-                        requirement_set.cleanup_files()
-                        wheel_cache.cleanup()
-
-        if options.target_dir:
-            self._handle_target_dir(
-                options.target_dir, target_temp_dir, options.upgrade
-            )
-        return requirement_set
-
-    def _handle_target_dir(self, target_dir, target_temp_dir, upgrade):
-        ensure_dir(target_dir)
-
-        # Checking both purelib and platlib directories for installed
-        # packages to be moved to target directory
-        lib_dir_list = []
-
-        with target_temp_dir:
-            # Checking both purelib and platlib directories for installed
-            # packages to be moved to target directory
-            scheme = distutils_scheme('', home=target_temp_dir.path)
-            purelib_dir = scheme['purelib']
-            platlib_dir = scheme['platlib']
-            data_dir = scheme['data']
-
-            if os.path.exists(purelib_dir):
-                lib_dir_list.append(purelib_dir)
-            if os.path.exists(platlib_dir) and platlib_dir != purelib_dir:
-                lib_dir_list.append(platlib_dir)
-            if os.path.exists(data_dir):
-                lib_dir_list.append(data_dir)
-
-            for lib_dir in lib_dir_list:
-                for item in os.listdir(lib_dir):
-                    if lib_dir == data_dir:
-                        ddir = os.path.join(data_dir, item)
-                        if any(s.startswith(ddir) for s in lib_dir_list[:-1]):
-                            continue
-                    target_item_dir = os.path.join(target_dir, item)
-                    if os.path.exists(target_item_dir):
-                        if not upgrade:
-                            logger.warning(
-                                'Target directory %s already exists. Specify '
-                                '--upgrade to force replacement.',
-                                target_item_dir
-                            )
-                            continue
-                        if os.path.islink(target_item_dir):
-                            logger.warning(
-                                'Target directory %s already exists and is '
-                                'a link. Pip will not automatically replace '
-                                'links, please remove if replacement is '
-                                'desired.',
-                                target_item_dir
-                            )
-                            continue
-                        if os.path.isdir(target_item_dir):
-                            shutil.rmtree(target_item_dir)
-                        else:
-                            os.remove(target_item_dir)
-
-                    shutil.move(
-                        os.path.join(lib_dir, item),
-                        target_item_dir
-                    )
-
-    def _warn_about_conflicts(self, to_install):
-        try:
-            package_set, _dep_info = check_install_conflicts(to_install)
-        except Exception:
-            logger.error("Error checking for conflicts.", exc_info=True)
-            return
-        missing, conflicting = _dep_info
-
-        # NOTE: There is some duplication here from pip check
-        for project_name in missing:
-            version = package_set[project_name][0]
-            for dependency in missing[project_name]:
-                logger.critical(
-                    "%s %s requires %s, which is not installed.",
-                    project_name, version, dependency[1],
-                )
-
-        for project_name in conflicting:
-            version = package_set[project_name][0]
-            for dep_name, dep_version, req in conflicting[project_name]:
-                logger.critical(
-                    "%s %s has requirement %s, but you'll have %s %s which is "
-                    "incompatible.",
-                    project_name, version, req, dep_name, dep_version,
-                )
-
-
-def get_lib_location_guesses(*args, **kwargs):
-    scheme = distutils_scheme('', *args, **kwargs)
-    return [scheme['purelib'], scheme['platlib']]
-
-
-def create_env_error_message(error, show_traceback, using_user_site):
-    """Format an error message for an EnvironmentError
-
-    It may occur anytime during the execution of the install command.
-    """
-    parts = []
-
-    # Mention the error if we are not going to show a traceback
-    parts.append("Could not install packages due to an EnvironmentError")
-    if not show_traceback:
-        parts.append(": ")
-        parts.append(str(error))
-    else:
-        parts.append(".")
-
-    # Spilt the error indication from a helper message (if any)
-    parts[-1] += "\n"
-
-    # Suggest useful actions to the user:
-    #  (1) using user site-packages or (2) verifying the permissions
-    if error.errno == errno.EACCES:
-        user_option_part = "Consider using the `--user` option"
-        permissions_part = "Check the permissions"
-
-        if not using_user_site:
-            parts.extend([
-                user_option_part, " or ",
-                permissions_part.lower(),
-            ])
-        else:
-            parts.append(permissions_part)
-        parts.append(".\n")
-
-    return "".join(parts).strip() + "\n"

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/list.py

@@ -1,301 +0,0 @@
-from __future__ import absolute_import
-
-import json
-import logging
-
-from pip._vendor import six
-from pip._vendor.six.moves import zip_longest
-
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.base_command import Command
-from pip._internal.exceptions import CommandError
-from pip._internal.index import PackageFinder
-from pip._internal.utils.misc import (
-    dist_is_editable, get_installed_distributions,
-)
-from pip._internal.utils.packaging import get_installer
-
-logger = logging.getLogger(__name__)
-
-
-class ListCommand(Command):
-    """
-    List installed packages, including editables.
-
-    Packages are listed in a case-insensitive sorted order.
-    """
-    name = 'list'
-    usage = """
-      %prog [options]"""
-    summary = 'List installed packages.'
-
-    def __init__(self, *args, **kw):
-        super(ListCommand, self).__init__(*args, **kw)
-
-        cmd_opts = self.cmd_opts
-
-        cmd_opts.add_option(
-            '-o', '--outdated',
-            action='store_true',
-            default=False,
-            help='List outdated packages')
-        cmd_opts.add_option(
-            '-u', '--uptodate',
-            action='store_true',
-            default=False,
-            help='List uptodate packages')
-        cmd_opts.add_option(
-            '-e', '--editable',
-            action='store_true',
-            default=False,
-            help='List editable projects.')
-        cmd_opts.add_option(
-            '-l', '--local',
-            action='store_true',
-            default=False,
-            help=('If in a virtualenv that has global access, do not list '
-                  'globally-installed packages.'),
-        )
-        self.cmd_opts.add_option(
-            '--user',
-            dest='user',
-            action='store_true',
-            default=False,
-            help='Only output packages installed in user-site.')
-
-        cmd_opts.add_option(
-            '--pre',
-            action='store_true',
-            default=False,
-            help=("Include pre-release and development versions. By default, "
-                  "pip only finds stable versions."),
-        )
-
-        cmd_opts.add_option(
-            '--format',
-            action='store',
-            dest='list_format',
-            default="columns",
-            choices=('columns', 'freeze', 'json'),
-            help="Select the output format among: columns (default), freeze, "
-                 "or json",
-        )
-
-        cmd_opts.add_option(
-            '--not-required',
-            action='store_true',
-            dest='not_required',
-            help="List packages that are not dependencies of "
-                 "installed packages.",
-        )
-
-        cmd_opts.add_option(
-            '--exclude-editable',
-            action='store_false',
-            dest='include_editable',
-            help='Exclude editable package from output.',
-        )
-        cmd_opts.add_option(
-            '--include-editable',
-            action='store_true',
-            dest='include_editable',
-            help='Include editable package from output.',
-            default=True,
-        )
-        index_opts = cmdoptions.make_option_group(
-            cmdoptions.index_group, self.parser
-        )
-
-        self.parser.insert_option_group(0, index_opts)
-        self.parser.insert_option_group(0, cmd_opts)
-
-    def _build_package_finder(self, options, index_urls, session):
-        """
-        Create a package finder appropriate to this list command.
-        """
-        return PackageFinder(
-            find_links=options.find_links,
-            index_urls=index_urls,
-            allow_all_prereleases=options.pre,
-            trusted_hosts=options.trusted_hosts,
-            session=session,
-        )
-
-    def run(self, options, args):
-        if options.outdated and options.uptodate:
-            raise CommandError(
-                "Options --outdated and --uptodate cannot be combined.")
-
-        packages = get_installed_distributions(
-            local_only=options.local,
-            user_only=options.user,
-            editables_only=options.editable,
-            include_editables=options.include_editable,
-        )
-
-        # get_not_required must be called firstly in order to find and
-        # filter out all dependencies correctly. Otherwise a package
-        # can't be identified as requirement because some parent packages
-        # could be filtered out before.
-        if options.not_required:
-            packages = self.get_not_required(packages, options)
-
-        if options.outdated:
-            packages = self.get_outdated(packages, options)
-        elif options.uptodate:
-            packages = self.get_uptodate(packages, options)
-
-        self.output_package_listing(packages, options)
-
-    def get_outdated(self, packages, options):
-        return [
-            dist for dist in self.iter_packages_latest_infos(packages, options)
-            if dist.latest_version > dist.parsed_version
-        ]
-
-    def get_uptodate(self, packages, options):
-        return [
-            dist for dist in self.iter_packages_latest_infos(packages, options)
-            if dist.latest_version == dist.parsed_version
-        ]
-
-    def get_not_required(self, packages, options):
-        dep_keys = set()
-        for dist in packages:
-            dep_keys.update(requirement.key for requirement in dist.requires())
-        return {pkg for pkg in packages if pkg.key not in dep_keys}
-
-    def iter_packages_latest_infos(self, packages, options):
-        index_urls = [options.index_url] + options.extra_index_urls
-        if options.no_index:
-            logger.debug('Ignoring indexes: %s', ','.join(index_urls))
-            index_urls = []
-
-        with self._build_session(options) as session:
-            finder = self._build_package_finder(options, index_urls, session)
-
-            for dist in packages:
-                typ = 'unknown'
-                all_candidates = finder.find_all_candidates(dist.key)
-                if not options.pre:
-                    # Remove prereleases
-                    all_candidates = [candidate for candidate in all_candidates
-                                      if not candidate.version.is_prerelease]
-
-                if not all_candidates:
-                    continue
-                best_candidate = max(all_candidates,
-                                     key=finder._candidate_sort_key)
-                remote_version = best_candidate.version
-                if best_candidate.location.is_wheel:
-                    typ = 'wheel'
-                else:
-                    typ = 'sdist'
-                # This is dirty but makes the rest of the code much cleaner
-                dist.latest_version = remote_version
-                dist.latest_filetype = typ
-                yield dist
-
-    def output_package_listing(self, packages, options):
-        packages = sorted(
-            packages,
-            key=lambda dist: dist.project_name.lower(),
-        )
-        if options.list_format == 'columns' and packages:
-            data, header = format_for_columns(packages, options)
-            self.output_package_listing_columns(data, header)
-        elif options.list_format == 'freeze':
-            for dist in packages:
-                if options.verbose >= 1:
-                    logger.info("%s==%s (%s)", dist.project_name,
-                                dist.version, dist.location)
-                else:
-                    logger.info("%s==%s", dist.project_name, dist.version)
-        elif options.list_format == 'json':
-            logger.info(format_for_json(packages, options))
-
-    def output_package_listing_columns(self, data, header):
-        # insert the header first: we need to know the size of column names
-        if len(data) > 0:
-            data.insert(0, header)
-
-        pkg_strings, sizes = tabulate(data)
-
-        # Create and add a separator.
-        if len(data) > 0:
-            pkg_strings.insert(1, " ".join(map(lambda x: '-' * x, sizes)))
-
-        for val in pkg_strings:
-            logger.info(val)
-
-
-def tabulate(vals):
-    # From pfmoore on GitHub:
-    # https://github.com/pypa/pip/issues/3651#issuecomment-216932564
-    assert len(vals) > 0
-
-    sizes = [0] * max(len(x) for x in vals)
-    for row in vals:
-        sizes = [max(s, len(str(c))) for s, c in zip_longest(sizes, row)]
-
-    result = []
-    for row in vals:
-        display = " ".join([str(c).ljust(s) if c is not None else ''
-                            for s, c in zip_longest(sizes, row)])
-        result.append(display)
-
-    return result, sizes
-
-
-def format_for_columns(pkgs, options):
-    """
-    Convert the package data into something usable
-    by output_package_listing_columns.
-    """
-    running_outdated = options.outdated
-    # Adjust the header for the `pip list --outdated` case.
-    if running_outdated:
-        header = ["Package", "Version", "Latest", "Type"]
-    else:
-        header = ["Package", "Version"]
-
-    data = []
-    if options.verbose >= 1 or any(dist_is_editable(x) for x in pkgs):
-        header.append("Location")
-    if options.verbose >= 1:
-        header.append("Installer")
-
-    for proj in pkgs:
-        # if we're working on the 'outdated' list, separate out the
-        # latest_version and type
-        row = [proj.project_name, proj.version]
-
-        if running_outdated:
-            row.append(proj.latest_version)
-            row.append(proj.latest_filetype)
-
-        if options.verbose >= 1 or dist_is_editable(proj):
-            row.append(proj.location)
-        if options.verbose >= 1:
-            row.append(get_installer(proj))
-
-        data.append(row)
-
-    return data, header
-
-
-def format_for_json(packages, options):
-    data = []
-    for dist in packages:
-        info = {
-            'name': dist.project_name,
-            'version': six.text_type(dist.version),
-        }
-        if options.verbose >= 1:
-            info['location'] = dist.location
-            info['installer'] = get_installer(dist)
-        if options.outdated:
-            info['latest_version'] = six.text_type(dist.latest_version)
-            info['latest_filetype'] = dist.latest_filetype
-        data.append(info)
-    return json.dumps(data)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/search.py

@@ -1,135 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-import sys
-import textwrap
-from collections import OrderedDict
-
-from pip._vendor import pkg_resources
-from pip._vendor.packaging.version import parse as parse_version
-# NOTE: XMLRPC Client is not annotated in typeshed as on 2017-07-17, which is
-#       why we ignore the type on this import
-from pip._vendor.six.moves import xmlrpc_client  # type: ignore
-
-from pip._internal.cli.base_command import Command
-from pip._internal.cli.status_codes import NO_MATCHES_FOUND, SUCCESS
-from pip._internal.download import PipXmlrpcTransport
-from pip._internal.exceptions import CommandError
-from pip._internal.models.index import PyPI
-from pip._internal.utils.compat import get_terminal_size
-from pip._internal.utils.logging import indent_log
-
-logger = logging.getLogger(__name__)
-
-
-class SearchCommand(Command):
-    """Search for PyPI packages whose name or summary contains <query>."""
-    name = 'search'
-    usage = """
-      %prog [options] <query>"""
-    summary = 'Search PyPI for packages.'
-    ignore_require_venv = True
-
-    def __init__(self, *args, **kw):
-        super(SearchCommand, self).__init__(*args, **kw)
-        self.cmd_opts.add_option(
-            '-i', '--index',
-            dest='index',
-            metavar='URL',
-            default=PyPI.pypi_url,
-            help='Base URL of Python Package Index (default %default)')
-
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        if not args:
-            raise CommandError('Missing required argument (search query).')
-        query = args
-        pypi_hits = self.search(query, options)
-        hits = transform_hits(pypi_hits)
-
-        terminal_width = None
-        if sys.stdout.isatty():
-            terminal_width = get_terminal_size()[0]
-
-        print_results(hits, terminal_width=terminal_width)
-        if pypi_hits:
-            return SUCCESS
-        return NO_MATCHES_FOUND
-
-    def search(self, query, options):
-        index_url = options.index
-        with self._build_session(options) as session:
-            transport = PipXmlrpcTransport(index_url, session)
-            pypi = xmlrpc_client.ServerProxy(index_url, transport)
-            hits = pypi.search({'name': query, 'summary': query}, 'or')
-            return hits
-
-
-def transform_hits(hits):
-    """
-    The list from pypi is really a list of versions. We want a list of
-    packages with the list of versions stored inline. This converts the
-    list from pypi into one we can use.
-    """
-    packages = OrderedDict()
-    for hit in hits:
-        name = hit['name']
-        summary = hit['summary']
-        version = hit['version']
-
-        if name not in packages.keys():
-            packages[name] = {
-                'name': name,
-                'summary': summary,
-                'versions': [version],
-            }
-        else:
-            packages[name]['versions'].append(version)
-
-            # if this is the highest version, replace summary and score
-            if version == highest_version(packages[name]['versions']):
-                packages[name]['summary'] = summary
-
-    return list(packages.values())
-
-
-def print_results(hits, name_column_width=None, terminal_width=None):
-    if not hits:
-        return
-    if name_column_width is None:
-        name_column_width = max([
-            len(hit['name']) + len(highest_version(hit.get('versions', ['-'])))
-            for hit in hits
-        ]) + 4
-
-    installed_packages = [p.project_name for p in pkg_resources.working_set]
-    for hit in hits:
-        name = hit['name']
-        summary = hit['summary'] or ''
-        latest = highest_version(hit.get('versions', ['-']))
-        if terminal_width is not None:
-            target_width = terminal_width - name_column_width - 5
-            if target_width > 10:
-                # wrap and indent summary to fit terminal
-                summary = textwrap.wrap(summary, target_width)
-                summary = ('\n' + ' ' * (name_column_width + 3)).join(summary)
-
-        line = '%-*s - %s' % (name_column_width,
-                              '%s (%s)' % (name, latest), summary)
-        try:
-            logger.info(line)
-            if name in installed_packages:
-                dist = pkg_resources.get_distribution(name)
-                with indent_log():
-                    if dist.version == latest:
-                        logger.info('INSTALLED: %s (latest)', dist.version)
-                    else:
-                        logger.info('INSTALLED: %s', dist.version)
-                        logger.info('LATEST:    %s', latest)
-        except UnicodeEncodeError:
-            pass
-
-
-def highest_version(versions):
-    return max(versions, key=parse_version)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/show.py

@@ -1,168 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-import os
-from email.parser import FeedParser  # type: ignore
-
-from pip._vendor import pkg_resources
-from pip._vendor.packaging.utils import canonicalize_name
-
-from pip._internal.cli.base_command import Command
-from pip._internal.cli.status_codes import ERROR, SUCCESS
-
-logger = logging.getLogger(__name__)
-
-
-class ShowCommand(Command):
-    """
-    Show information about one or more installed packages.
-
-    The output is in RFC-compliant mail header format.
-    """
-    name = 'show'
-    usage = """
-      %prog [options] <package> ..."""
-    summary = 'Show information about installed packages.'
-    ignore_require_venv = True
-
-    def __init__(self, *args, **kw):
-        super(ShowCommand, self).__init__(*args, **kw)
-        self.cmd_opts.add_option(
-            '-f', '--files',
-            dest='files',
-            action='store_true',
-            default=False,
-            help='Show the full list of installed files for each package.')
-
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        if not args:
-            logger.warning('ERROR: Please provide a package name or names.')
-            return ERROR
-        query = args
-
-        results = search_packages_info(query)
-        if not print_results(
-                results, list_files=options.files, verbose=options.verbose):
-            return ERROR
-        return SUCCESS
-
-
-def search_packages_info(query):
-    """
-    Gather details from installed distributions. Print distribution name,
-    version, location, and installed files. Installed files requires a
-    pip generated 'installed-files.txt' in the distributions '.egg-info'
-    directory.
-    """
-    installed = {}
-    for p in pkg_resources.working_set:
-        installed[canonicalize_name(p.project_name)] = p
-
-    query_names = [canonicalize_name(name) for name in query]
-
-    for dist in [installed[pkg] for pkg in query_names if pkg in installed]:
-        package = {
-            'name': dist.project_name,
-            'version': dist.version,
-            'location': dist.location,
-            'requires': [dep.project_name for dep in dist.requires()],
-        }
-        file_list = None
-        metadata = None
-        if isinstance(dist, pkg_resources.DistInfoDistribution):
-            # RECORDs should be part of .dist-info metadatas
-            if dist.has_metadata('RECORD'):
-                lines = dist.get_metadata_lines('RECORD')
-                paths = [l.split(',')[0] for l in lines]
-                paths = [os.path.join(dist.location, p) for p in paths]
-                file_list = [os.path.relpath(p, dist.location) for p in paths]
-
-            if dist.has_metadata('METADATA'):
-                metadata = dist.get_metadata('METADATA')
-        else:
-            # Otherwise use pip's log for .egg-info's
-            if dist.has_metadata('installed-files.txt'):
-                paths = dist.get_metadata_lines('installed-files.txt')
-                paths = [os.path.join(dist.egg_info, p) for p in paths]
-                file_list = [os.path.relpath(p, dist.location) for p in paths]
-
-            if dist.has_metadata('PKG-INFO'):
-                metadata = dist.get_metadata('PKG-INFO')
-
-        if dist.has_metadata('entry_points.txt'):
-            entry_points = dist.get_metadata_lines('entry_points.txt')
-            package['entry_points'] = entry_points
-
-        if dist.has_metadata('INSTALLER'):
-            for line in dist.get_metadata_lines('INSTALLER'):
-                if line.strip():
-                    package['installer'] = line.strip()
-                    break
-
-        # @todo: Should pkg_resources.Distribution have a
-        # `get_pkg_info` method?
-        feed_parser = FeedParser()
-        feed_parser.feed(metadata)
-        pkg_info_dict = feed_parser.close()
-        for key in ('metadata-version', 'summary',
-                    'home-page', 'author', 'author-email', 'license'):
-            package[key] = pkg_info_dict.get(key)
-
-        # It looks like FeedParser cannot deal with repeated headers
-        classifiers = []
-        for line in metadata.splitlines():
-            if line.startswith('Classifier: '):
-                classifiers.append(line[len('Classifier: '):])
-        package['classifiers'] = classifiers
-
-        if file_list:
-            package['files'] = sorted(file_list)
-        yield package
-
-
-def print_results(distributions, list_files=False, verbose=False):
-    """
-    Print the informations from installed distributions found.
-    """
-    results_printed = False
-    for i, dist in enumerate(distributions):
-        results_printed = True
-        if i > 0:
-            logger.info("---")
-
-        name = dist.get('name', '')
-        required_by = [
-            pkg.project_name for pkg in pkg_resources.working_set
-            if name in [required.name for required in pkg.requires()]
-        ]
-
-        logger.info("Name: %s", name)
-        logger.info("Version: %s", dist.get('version', ''))
-        logger.info("Summary: %s", dist.get('summary', ''))
-        logger.info("Home-page: %s", dist.get('home-page', ''))
-        logger.info("Author: %s", dist.get('author', ''))
-        logger.info("Author-email: %s", dist.get('author-email', ''))
-        logger.info("License: %s", dist.get('license', ''))
-        logger.info("Location: %s", dist.get('location', ''))
-        logger.info("Requires: %s", ', '.join(dist.get('requires', [])))
-        logger.info("Required-by: %s", ', '.join(required_by))
-
-        if verbose:
-            logger.info("Metadata-Version: %s",
-                        dist.get('metadata-version', ''))
-            logger.info("Installer: %s", dist.get('installer', ''))
-            logger.info("Classifiers:")
-            for classifier in dist.get('classifiers', []):
-                logger.info("  %s", classifier)
-            logger.info("Entry-points:")
-            for entry in dist.get('entry_points', []):
-                logger.info("  %s", entry.strip())
-        if list_files:
-            logger.info("Files:")
-            for line in dist.get('files', []):
-                logger.info("  %s", line.strip())
-            if "files" not in dist:
-                logger.info("Cannot locate installed-files.txt")
-    return results_printed

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/uninstall.py

@@ -1,78 +0,0 @@
-from __future__ import absolute_import
-
-from pip._vendor.packaging.utils import canonicalize_name
-
-from pip._internal.cli.base_command import Command
-from pip._internal.exceptions import InstallationError
-from pip._internal.req import parse_requirements
-from pip._internal.req.constructors import install_req_from_line
-from pip._internal.utils.misc import protect_pip_from_modification_on_windows
-
-
-class UninstallCommand(Command):
-    """
-    Uninstall packages.
-
-    pip is able to uninstall most installed packages. Known exceptions are:
-
-    - Pure distutils packages installed with ``python setup.py install``, which
-      leave behind no metadata to determine what files were installed.
-    - Script wrappers installed by ``python setup.py develop``.
-    """
-    name = 'uninstall'
-    usage = """
-      %prog [options] <package> ...
-      %prog [options] -r <requirements file> ..."""
-    summary = 'Uninstall packages.'
-
-    def __init__(self, *args, **kw):
-        super(UninstallCommand, self).__init__(*args, **kw)
-        self.cmd_opts.add_option(
-            '-r', '--requirement',
-            dest='requirements',
-            action='append',
-            default=[],
-            metavar='file',
-            help='Uninstall all the packages listed in the given requirements '
-                 'file.  This option can be used multiple times.',
-        )
-        self.cmd_opts.add_option(
-            '-y', '--yes',
-            dest='yes',
-            action='store_true',
-            help="Don't ask for confirmation of uninstall deletions.")
-
-        self.parser.insert_option_group(0, self.cmd_opts)
-
-    def run(self, options, args):
-        with self._build_session(options) as session:
-            reqs_to_uninstall = {}
-            for name in args:
-                req = install_req_from_line(
-                    name, isolated=options.isolated_mode,
-                )
-                if req.name:
-                    reqs_to_uninstall[canonicalize_name(req.name)] = req
-            for filename in options.requirements:
-                for req in parse_requirements(
-                        filename,
-                        options=options,
-                        session=session):
-                    if req.name:
-                        reqs_to_uninstall[canonicalize_name(req.name)] = req
-            if not reqs_to_uninstall:
-                raise InstallationError(
-                    'You must give at least one requirement to %(name)s (see '
-                    '"pip help %(name)s")' % dict(name=self.name)
-                )
-
-            protect_pip_from_modification_on_windows(
-                modifying_pip="pip" in reqs_to_uninstall
-            )
-
-            for req in reqs_to_uninstall.values():
-                uninstall_pathset = req.uninstall(
-                    auto_confirm=options.yes, verbose=self.verbosity > 0,
-                )
-                if uninstall_pathset:
-                    uninstall_pathset.commit()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/commands/wheel.py

@@ -1,186 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import absolute_import
-
-import logging
-import os
-
-from pip._internal.cache import WheelCache
-from pip._internal.cli import cmdoptions
-from pip._internal.cli.base_command import RequirementCommand
-from pip._internal.exceptions import CommandError, PreviousBuildDirError
-from pip._internal.operations.prepare import RequirementPreparer
-from pip._internal.req import RequirementSet
-from pip._internal.req.req_tracker import RequirementTracker
-from pip._internal.resolve import Resolver
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.wheel import WheelBuilder
-
-logger = logging.getLogger(__name__)
-
-
-class WheelCommand(RequirementCommand):
-    """
-    Build Wheel archives for your requirements and dependencies.
-
-    Wheel is a built-package format, and offers the advantage of not
-    recompiling your software during every install. For more details, see the
-    wheel docs: https://wheel.readthedocs.io/en/latest/
-
-    Requirements: setuptools>=0.8, and wheel.
-
-    'pip wheel' uses the bdist_wheel setuptools extension from the wheel
-    package to build individual wheels.
-
-    """
-
-    name = 'wheel'
-    usage = """
-      %prog [options] <requirement specifier> ...
-      %prog [options] -r <requirements file> ...
-      %prog [options] [-e] <vcs project url> ...
-      %prog [options] [-e] <local project path> ...
-      %prog [options] <archive url/path> ..."""
-
-    summary = 'Build wheels from your requirements.'
-
-    def __init__(self, *args, **kw):
-        super(WheelCommand, self).__init__(*args, **kw)
-
-        cmd_opts = self.cmd_opts
-
-        cmd_opts.add_option(
-            '-w', '--wheel-dir',
-            dest='wheel_dir',
-            metavar='dir',
-            default=os.curdir,
-            help=("Build wheels into <dir>, where the default is the "
-                  "current working directory."),
-        )
-        cmd_opts.add_option(cmdoptions.no_binary())
-        cmd_opts.add_option(cmdoptions.only_binary())
-        cmd_opts.add_option(cmdoptions.prefer_binary())
-        cmd_opts.add_option(
-            '--build-option',
-            dest='build_options',
-            metavar='options',
-            action='append',
-            help="Extra arguments to be supplied to 'setup.py bdist_wheel'.",
-        )
-        cmd_opts.add_option(cmdoptions.no_build_isolation())
-        cmd_opts.add_option(cmdoptions.use_pep517())
-        cmd_opts.add_option(cmdoptions.no_use_pep517())
-        cmd_opts.add_option(cmdoptions.constraints())
-        cmd_opts.add_option(cmdoptions.editable())
-        cmd_opts.add_option(cmdoptions.requirements())
-        cmd_opts.add_option(cmdoptions.src())
-        cmd_opts.add_option(cmdoptions.ignore_requires_python())
-        cmd_opts.add_option(cmdoptions.no_deps())
-        cmd_opts.add_option(cmdoptions.build_dir())
-        cmd_opts.add_option(cmdoptions.progress_bar())
-
-        cmd_opts.add_option(
-            '--global-option',
-            dest='global_options',
-            action='append',
-            metavar='options',
-            help="Extra global options to be supplied to the setup.py "
-            "call before the 'bdist_wheel' command.")
-
-        cmd_opts.add_option(
-            '--pre',
-            action='store_true',
-            default=False,
-            help=("Include pre-release and development versions. By default, "
-                  "pip only finds stable versions."),
-        )
-
-        cmd_opts.add_option(cmdoptions.no_clean())
-        cmd_opts.add_option(cmdoptions.require_hashes())
-
-        index_opts = cmdoptions.make_option_group(
-            cmdoptions.index_group,
-            self.parser,
-        )
-
-        self.parser.insert_option_group(0, index_opts)
-        self.parser.insert_option_group(0, cmd_opts)
-
-    def run(self, options, args):
-        cmdoptions.check_install_build_global(options)
-
-        index_urls = [options.index_url] + options.extra_index_urls
-        if options.no_index:
-            logger.debug('Ignoring indexes: %s', ','.join(index_urls))
-            index_urls = []
-
-        if options.build_dir:
-            options.build_dir = os.path.abspath(options.build_dir)
-
-        options.src_dir = os.path.abspath(options.src_dir)
-
-        with self._build_session(options) as session:
-            finder = self._build_package_finder(options, session)
-            build_delete = (not (options.no_clean or options.build_dir))
-            wheel_cache = WheelCache(options.cache_dir, options.format_control)
-
-            with RequirementTracker() as req_tracker, TempDirectory(
-                options.build_dir, delete=build_delete, kind="wheel"
-            ) as directory:
-
-                requirement_set = RequirementSet(
-                    require_hashes=options.require_hashes,
-                )
-
-                try:
-                    self.populate_requirement_set(
-                        requirement_set, args, options, finder, session,
-                        self.name, wheel_cache
-                    )
-
-                    preparer = RequirementPreparer(
-                        build_dir=directory.path,
-                        src_dir=options.src_dir,
-                        download_dir=None,
-                        wheel_download_dir=options.wheel_dir,
-                        progress_bar=options.progress_bar,
-                        build_isolation=options.build_isolation,
-                        req_tracker=req_tracker,
-                    )
-
-                    resolver = Resolver(
-                        preparer=preparer,
-                        finder=finder,
-                        session=session,
-                        wheel_cache=wheel_cache,
-                        use_user_site=False,
-                        upgrade_strategy="to-satisfy-only",
-                        force_reinstall=False,
-                        ignore_dependencies=options.ignore_dependencies,
-                        ignore_requires_python=options.ignore_requires_python,
-                        ignore_installed=True,
-                        isolated=options.isolated_mode,
-                        use_pep517=options.use_pep517
-                    )
-                    resolver.resolve(requirement_set)
-
-                    # build wheels
-                    wb = WheelBuilder(
-                        finder, preparer, wheel_cache,
-                        build_options=options.build_options or [],
-                        global_options=options.global_options or [],
-                        no_clean=options.no_clean,
-                    )
-                    build_failures = wb.build(
-                        requirement_set.requirements.values(), session=session,
-                    )
-                    if len(build_failures) != 0:
-                        raise CommandError(
-                            "Failed to build one or more wheels"
-                        )
-                except PreviousBuildDirError:
-                    options.no_clean = True
-                    raise
-                finally:
-                    if not options.no_clean:
-                        requirement_set.cleanup_files()
-                        wheel_cache.cleanup()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/configuration.py

@@ -1,387 +0,0 @@
-"""Configuration management setup
-
-Some terminology:
-- name
-  As written in config files.
-- value
-  Value associated with a name
-- key
-  Name combined with it's section (section.name)
-- variant
-  A single word describing where the configuration key-value pair came from
-"""
-
-import locale
-import logging
-import os
-
-from pip._vendor import six
-from pip._vendor.six.moves import configparser
-
-from pip._internal.exceptions import (
-    ConfigurationError, ConfigurationFileCouldNotBeLoaded,
-)
-from pip._internal.locations import (
-    legacy_config_file, new_config_file, running_under_virtualenv,
-    site_config_files, venv_config_file,
-)
-from pip._internal.utils.misc import ensure_dir, enum
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Any, Dict, Iterable, List, NewType, Optional, Tuple
-    )
-
-    RawConfigParser = configparser.RawConfigParser  # Shorthand
-    Kind = NewType("Kind", str)
-
-logger = logging.getLogger(__name__)
-
-
-# NOTE: Maybe use the optionx attribute to normalize keynames.
-def _normalize_name(name):
-    # type: (str) -> str
-    """Make a name consistent regardless of source (environment or file)
-    """
-    name = name.lower().replace('_', '-')
-    if name.startswith('--'):
-        name = name[2:]  # only prefer long opts
-    return name
-
-
-def _disassemble_key(name):
-    # type: (str) -> List[str]
-    return name.split(".", 1)
-
-
-# The kinds of configurations there are.
-kinds = enum(
-    USER="user",        # User Specific
-    GLOBAL="global",    # System Wide
-    VENV="venv",        # Virtual Environment Specific
-    ENV="env",          # from PIP_CONFIG_FILE
-    ENV_VAR="env-var",  # from Environment Variables
-)
-
-
-class Configuration(object):
-    """Handles management of configuration.
-
-    Provides an interface to accessing and managing configuration files.
-
-    This class converts provides an API that takes "section.key-name" style
-    keys and stores the value associated with it as "key-name" under the
-    section "section".
-
-    This allows for a clean interface wherein the both the section and the
-    key-name are preserved in an easy to manage form in the configuration files
-    and the data stored is also nice.
-    """
-
-    def __init__(self, isolated, load_only=None):
-        # type: (bool, Kind) -> None
-        super(Configuration, self).__init__()
-
-        _valid_load_only = [kinds.USER, kinds.GLOBAL, kinds.VENV, None]
-        if load_only not in _valid_load_only:
-            raise ConfigurationError(
-                "Got invalid value for load_only - should be one of {}".format(
-                    ", ".join(map(repr, _valid_load_only[:-1]))
-                )
-            )
-        self.isolated = isolated  # type: bool
-        self.load_only = load_only  # type: Optional[Kind]
-
-        # The order here determines the override order.
-        self._override_order = [
-            kinds.GLOBAL, kinds.USER, kinds.VENV, kinds.ENV, kinds.ENV_VAR
-        ]
-
-        self._ignore_env_names = ["version", "help"]
-
-        # Because we keep track of where we got the data from
-        self._parsers = {
-            variant: [] for variant in self._override_order
-        }  # type: Dict[Kind, List[Tuple[str, RawConfigParser]]]
-        self._config = {
-            variant: {} for variant in self._override_order
-        }  # type: Dict[Kind, Dict[str, Any]]
-        self._modified_parsers = []  # type: List[Tuple[str, RawConfigParser]]
-
-    def load(self):
-        # type: () -> None
-        """Loads configuration from configuration files and environment
-        """
-        self._load_config_files()
-        if not self.isolated:
-            self._load_environment_vars()
-
-    def get_file_to_edit(self):
-        # type: () -> Optional[str]
-        """Returns the file with highest priority in configuration
-        """
-        assert self.load_only is not None, \
-            "Need to be specified a file to be editing"
-
-        try:
-            return self._get_parser_to_modify()[0]
-        except IndexError:
-            return None
-
-    def items(self):
-        # type: () -> Iterable[Tuple[str, Any]]
-        """Returns key-value pairs like dict.items() representing the loaded
-        configuration
-        """
-        return self._dictionary.items()
-
-    def get_value(self, key):
-        # type: (str) -> Any
-        """Get a value from the configuration.
-        """
-        try:
-            return self._dictionary[key]
-        except KeyError:
-            raise ConfigurationError("No such key - {}".format(key))
-
-    def set_value(self, key, value):
-        # type: (str, Any) -> None
-        """Modify a value in the configuration.
-        """
-        self._ensure_have_load_only()
-
-        fname, parser = self._get_parser_to_modify()
-
-        if parser is not None:
-            section, name = _disassemble_key(key)
-
-            # Modify the parser and the configuration
-            if not parser.has_section(section):
-                parser.add_section(section)
-            parser.set(section, name, value)
-
-        self._config[self.load_only][key] = value
-        self._mark_as_modified(fname, parser)
-
-    def unset_value(self, key):
-        # type: (str) -> None
-        """Unset a value in the configuration.
-        """
-        self._ensure_have_load_only()
-
-        if key not in self._config[self.load_only]:
-            raise ConfigurationError("No such key - {}".format(key))
-
-        fname, parser = self._get_parser_to_modify()
-
-        if parser is not None:
-            section, name = _disassemble_key(key)
-
-            # Remove the key in the parser
-            modified_something = False
-            if parser.has_section(section):
-                # Returns whether the option was removed or not
-                modified_something = parser.remove_option(section, name)
-
-            if modified_something:
-                # name removed from parser, section may now be empty
-                section_iter = iter(parser.items(section))
-                try:
-                    val = six.next(section_iter)
-                except StopIteration:
-                    val = None
-
-                if val is None:
-                    parser.remove_section(section)
-
-                self._mark_as_modified(fname, parser)
-            else:
-                raise ConfigurationError(
-                    "Fatal Internal error [id=1]. Please report as a bug."
-                )
-
-        del self._config[self.load_only][key]
-
-    def save(self):
-        # type: () -> None
-        """Save the currentin-memory state.
-        """
-        self._ensure_have_load_only()
-
-        for fname, parser in self._modified_parsers:
-            logger.info("Writing to %s", fname)
-
-            # Ensure directory exists.
-            ensure_dir(os.path.dirname(fname))
-
-            with open(fname, "w") as f:
-                parser.write(f)  # type: ignore
-
-    #
-    # Private routines
-    #
-
-    def _ensure_have_load_only(self):
-        # type: () -> None
-        if self.load_only is None:
-            raise ConfigurationError("Needed a specific file to be modifying.")
-        logger.debug("Will be working with %s variant only", self.load_only)
-
-    @property
-    def _dictionary(self):
-        # type: () -> Dict[str, Any]
-        """A dictionary representing the loaded configuration.
-        """
-        # NOTE: Dictionaries are not populated if not loaded. So, conditionals
-        #       are not needed here.
-        retval = {}
-
-        for variant in self._override_order:
-            retval.update(self._config[variant])
-
-        return retval
-
-    def _load_config_files(self):
-        # type: () -> None
-        """Loads configuration from configuration files
-        """
-        config_files = dict(self._iter_config_files())
-        if config_files[kinds.ENV][0:1] == [os.devnull]:
-            logger.debug(
-                "Skipping loading configuration files due to "
-                "environment's PIP_CONFIG_FILE being os.devnull"
-            )
-            return
-
-        for variant, files in config_files.items():
-            for fname in files:
-                # If there's specific variant set in `load_only`, load only
-                # that variant, not the others.
-                if self.load_only is not None and variant != self.load_only:
-                    logger.debug(
-                        "Skipping file '%s' (variant: %s)", fname, variant
-                    )
-                    continue
-
-                parser = self._load_file(variant, fname)
-
-                # Keeping track of the parsers used
-                self._parsers[variant].append((fname, parser))
-
-    def _load_file(self, variant, fname):
-        # type: (Kind, str) -> RawConfigParser
-        logger.debug("For variant '%s', will try loading '%s'", variant, fname)
-        parser = self._construct_parser(fname)
-
-        for section in parser.sections():
-            items = parser.items(section)
-            self._config[variant].update(self._normalized_keys(section, items))
-
-        return parser
-
-    def _construct_parser(self, fname):
-        # type: (str) -> RawConfigParser
-        parser = configparser.RawConfigParser()
-        # If there is no such file, don't bother reading it but create the
-        # parser anyway, to hold the data.
-        # Doing this is useful when modifying and saving files, where we don't
-        # need to construct a parser.
-        if os.path.exists(fname):
-            try:
-                parser.read(fname)
-            except UnicodeDecodeError:
-                # See https://github.com/pypa/pip/issues/4963
-                raise ConfigurationFileCouldNotBeLoaded(
-                    reason="contains invalid {} characters".format(
-                        locale.getpreferredencoding(False)
-                    ),
-                    fname=fname,
-                )
-            except configparser.Error as error:
-                # See https://github.com/pypa/pip/issues/4893
-                raise ConfigurationFileCouldNotBeLoaded(error=error)
-        return parser
-
-    def _load_environment_vars(self):
-        # type: () -> None
-        """Loads configuration from environment variables
-        """
-        self._config[kinds.ENV_VAR].update(
-            self._normalized_keys(":env:", self._get_environ_vars())
-        )
-
-    def _normalized_keys(self, section, items):
-        # type: (str, Iterable[Tuple[str, Any]]) -> Dict[str, Any]
-        """Normalizes items to construct a dictionary with normalized keys.
-
-        This routine is where the names become keys and are made the same
-        regardless of source - configuration files or environment.
-        """
-        normalized = {}
-        for name, val in items:
-            key = section + "." + _normalize_name(name)
-            normalized[key] = val
-        return normalized
-
-    def _get_environ_vars(self):
-        # type: () -> Iterable[Tuple[str, str]]
-        """Returns a generator with all environmental vars with prefix PIP_"""
-        for key, val in os.environ.items():
-            should_be_yielded = (
-                key.startswith("PIP_") and
-                key[4:].lower() not in self._ignore_env_names
-            )
-            if should_be_yielded:
-                yield key[4:].lower(), val
-
-    # XXX: This is patched in the tests.
-    def _iter_config_files(self):
-        # type: () -> Iterable[Tuple[Kind, List[str]]]
-        """Yields variant and configuration files associated with it.
-
-        This should be treated like items of a dictionary.
-        """
-        # SMELL: Move the conditions out of this function
-
-        # environment variables have the lowest priority
-        config_file = os.environ.get('PIP_CONFIG_FILE', None)
-        if config_file is not None:
-            yield kinds.ENV, [config_file]
-        else:
-            yield kinds.ENV, []
-
-        # at the base we have any global configuration
-        yield kinds.GLOBAL, list(site_config_files)
-
-        # per-user configuration next
-        should_load_user_config = not self.isolated and not (
-            config_file and os.path.exists(config_file)
-        )
-        if should_load_user_config:
-            # The legacy config file is overridden by the new config file
-            yield kinds.USER, [legacy_config_file, new_config_file]
-
-        # finally virtualenv configuration first trumping others
-        if running_under_virtualenv():
-            yield kinds.VENV, [venv_config_file]
-
-    def _get_parser_to_modify(self):
-        # type: () -> Tuple[str, RawConfigParser]
-        # Determine which parser to modify
-        parsers = self._parsers[self.load_only]
-        if not parsers:
-            # This should not happen if everything works correctly.
-            raise ConfigurationError(
-                "Fatal Internal error [id=2]. Please report as a bug."
-            )
-
-        # Use the highest priority parser.
-        return parsers[-1]
-
-    # XXX: This is patched in the tests.
-    def _mark_as_modified(self, fname, parser):
-        # type: (str, RawConfigParser) -> None
-        file_parser_tuple = (fname, parser)
-        if file_parser_tuple not in self._modified_parsers:
-            self._modified_parsers.append(file_parser_tuple)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/download.py

@@ -1,971 +0,0 @@
-from __future__ import absolute_import
-
-import cgi
-import email.utils
-import getpass
-import json
-import logging
-import mimetypes
-import os
-import platform
-import re
-import shutil
-import sys
-
-from pip._vendor import requests, six, urllib3
-from pip._vendor.cachecontrol import CacheControlAdapter
-from pip._vendor.cachecontrol.caches import FileCache
-from pip._vendor.lockfile import LockError
-from pip._vendor.requests.adapters import BaseAdapter, HTTPAdapter
-from pip._vendor.requests.auth import AuthBase, HTTPBasicAuth
-from pip._vendor.requests.models import CONTENT_CHUNK_SIZE, Response
-from pip._vendor.requests.structures import CaseInsensitiveDict
-from pip._vendor.requests.utils import get_netrc_auth
-# NOTE: XMLRPC Client is not annotated in typeshed as on 2017-07-17, which is
-#       why we ignore the type on this import
-from pip._vendor.six.moves import xmlrpc_client  # type: ignore
-from pip._vendor.six.moves.urllib import parse as urllib_parse
-from pip._vendor.six.moves.urllib import request as urllib_request
-from pip._vendor.urllib3.util import IS_PYOPENSSL
-
-import pip
-from pip._internal.exceptions import HashMismatch, InstallationError
-from pip._internal.locations import write_delete_marker_file
-from pip._internal.models.index import PyPI
-from pip._internal.utils.encoding import auto_decode
-from pip._internal.utils.filesystem import check_path_owner
-from pip._internal.utils.glibc import libc_ver
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import (
-    ARCHIVE_EXTENSIONS, ask_path_exists, backup_dir, call_subprocess, consume,
-    display_path, format_size, get_installed_version, rmtree,
-    split_auth_from_netloc, splitext, unpack_file,
-)
-from pip._internal.utils.setuptools_build import SETUPTOOLS_SHIM
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.utils.ui import DownloadProgressProvider
-from pip._internal.vcs import vcs
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Optional, Tuple, Dict, IO, Text, Union
-    )
-    from pip._internal.models.link import Link  # noqa: F401
-    from pip._internal.utils.hashes import Hashes  # noqa: F401
-    from pip._internal.vcs import AuthInfo  # noqa: F401
-
-try:
-    import ssl  # noqa
-except ImportError:
-    ssl = None
-
-HAS_TLS = (ssl is not None) or IS_PYOPENSSL
-
-__all__ = ['get_file_content',
-           'is_url', 'url_to_path', 'path_to_url',
-           'is_archive_file', 'unpack_vcs_link',
-           'unpack_file_url', 'is_vcs_url', 'is_file_url',
-           'unpack_http_url', 'unpack_url']
-
-
-logger = logging.getLogger(__name__)
-
-
-def user_agent():
-    """
-    Return a string representing the user agent.
-    """
-    data = {
-        "installer": {"name": "pip", "version": pip.__version__},
-        "python": platform.python_version(),
-        "implementation": {
-            "name": platform.python_implementation(),
-        },
-    }
-
-    if data["implementation"]["name"] == 'CPython':
-        data["implementation"]["version"] = platform.python_version()
-    elif data["implementation"]["name"] == 'PyPy':
-        if sys.pypy_version_info.releaselevel == 'final':
-            pypy_version_info = sys.pypy_version_info[:3]
-        else:
-            pypy_version_info = sys.pypy_version_info
-        data["implementation"]["version"] = ".".join(
-            [str(x) for x in pypy_version_info]
-        )
-    elif data["implementation"]["name"] == 'Jython':
-        # Complete Guess
-        data["implementation"]["version"] = platform.python_version()
-    elif data["implementation"]["name"] == 'IronPython':
-        # Complete Guess
-        data["implementation"]["version"] = platform.python_version()
-
-    if sys.platform.startswith("linux"):
-        from pip._vendor import distro
-        distro_infos = dict(filter(
-            lambda x: x[1],
-            zip(["name", "version", "id"], distro.linux_distribution()),
-        ))
-        libc = dict(filter(
-            lambda x: x[1],
-            zip(["lib", "version"], libc_ver()),
-        ))
-        if libc:
-            distro_infos["libc"] = libc
-        if distro_infos:
-            data["distro"] = distro_infos
-
-    if sys.platform.startswith("darwin") and platform.mac_ver()[0]:
-        data["distro"] = {"name": "macOS", "version": platform.mac_ver()[0]}
-
-    if platform.system():
-        data.setdefault("system", {})["name"] = platform.system()
-
-    if platform.release():
-        data.setdefault("system", {})["release"] = platform.release()
-
-    if platform.machine():
-        data["cpu"] = platform.machine()
-
-    if HAS_TLS:
-        data["openssl_version"] = ssl.OPENSSL_VERSION
-
-    setuptools_version = get_installed_version("setuptools")
-    if setuptools_version is not None:
-        data["setuptools_version"] = setuptools_version
-
-    return "{data[installer][name]}/{data[installer][version]} {json}".format(
-        data=data,
-        json=json.dumps(data, separators=(",", ":"), sort_keys=True),
-    )
-
-
-class MultiDomainBasicAuth(AuthBase):
-
-    def __init__(self, prompting=True):
-        # type: (bool) -> None
-        self.prompting = prompting
-        self.passwords = {}  # type: Dict[str, AuthInfo]
-
-    def __call__(self, req):
-        parsed = urllib_parse.urlparse(req.url)
-
-        # Split the credentials from the netloc.
-        netloc, url_user_password = split_auth_from_netloc(parsed.netloc)
-
-        # Set the url of the request to the url without any credentials
-        req.url = urllib_parse.urlunparse(parsed[:1] + (netloc,) + parsed[2:])
-
-        # Use any stored credentials that we have for this netloc
-        username, password = self.passwords.get(netloc, (None, None))
-
-        # Use the credentials embedded in the url if we have none stored
-        if username is None:
-            username, password = url_user_password
-
-        # Get creds from netrc if we still don't have them
-        if username is None and password is None:
-            netrc_auth = get_netrc_auth(req.url)
-            username, password = netrc_auth if netrc_auth else (None, None)
-
-        if username or password:
-            # Store the username and password
-            self.passwords[netloc] = (username, password)
-
-            # Send the basic auth with this request
-            req = HTTPBasicAuth(username or "", password or "")(req)
-
-        # Attach a hook to handle 401 responses
-        req.register_hook("response", self.handle_401)
-
-        return req
-
-    def handle_401(self, resp, **kwargs):
-        # We only care about 401 responses, anything else we want to just
-        #   pass through the actual response
-        if resp.status_code != 401:
-            return resp
-
-        # We are not able to prompt the user so simply return the response
-        if not self.prompting:
-            return resp
-
-        parsed = urllib_parse.urlparse(resp.url)
-
-        # Prompt the user for a new username and password
-        username = six.moves.input("User for %s: " % parsed.netloc)
-        password = getpass.getpass("Password: ")
-
-        # Store the new username and password to use for future requests
-        if username or password:
-            self.passwords[parsed.netloc] = (username, password)
-
-        # Consume content and release the original connection to allow our new
-        #   request to reuse the same one.
-        resp.content
-        resp.raw.release_conn()
-
-        # Add our new username and password to the request
-        req = HTTPBasicAuth(username or "", password or "")(resp.request)
-        req.register_hook("response", self.warn_on_401)
-
-        # Send our new request
-        new_resp = resp.connection.send(req, **kwargs)
-        new_resp.history.append(resp)
-
-        return new_resp
-
-    def warn_on_401(self, resp, **kwargs):
-        # warn user that they provided incorrect credentials
-        if resp.status_code == 401:
-            logger.warning('401 Error, Credentials not correct for %s',
-                           resp.request.url)
-
-
-class LocalFSAdapter(BaseAdapter):
-
-    def send(self, request, stream=None, timeout=None, verify=None, cert=None,
-             proxies=None):
-        pathname = url_to_path(request.url)
-
-        resp = Response()
-        resp.status_code = 200
-        resp.url = request.url
-
-        try:
-            stats = os.stat(pathname)
-        except OSError as exc:
-            resp.status_code = 404
-            resp.raw = exc
-        else:
-            modified = email.utils.formatdate(stats.st_mtime, usegmt=True)
-            content_type = mimetypes.guess_type(pathname)[0] or "text/plain"
-            resp.headers = CaseInsensitiveDict({
-                "Content-Type": content_type,
-                "Content-Length": stats.st_size,
-                "Last-Modified": modified,
-            })
-
-            resp.raw = open(pathname, "rb")
-            resp.close = resp.raw.close
-
-        return resp
-
-    def close(self):
-        pass
-
-
-class SafeFileCache(FileCache):
-    """
-    A file based cache which is safe to use even when the target directory may
-    not be accessible or writable.
-    """
-
-    def __init__(self, *args, **kwargs):
-        super(SafeFileCache, self).__init__(*args, **kwargs)
-
-        # Check to ensure that the directory containing our cache directory
-        # is owned by the user current executing pip. If it does not exist
-        # we will check the parent directory until we find one that does exist.
-        # If it is not owned by the user executing pip then we will disable
-        # the cache and log a warning.
-        if not check_path_owner(self.directory):
-            logger.warning(
-                "The directory '%s' or its parent directory is not owned by "
-                "the current user and the cache has been disabled. Please "
-                "check the permissions and owner of that directory. If "
-                "executing pip with sudo, you may want sudo's -H flag.",
-                self.directory,
-            )
-
-            # Set our directory to None to disable the Cache
-            self.directory = None
-
-    def get(self, *args, **kwargs):
-        # If we don't have a directory, then the cache should be a no-op.
-        if self.directory is None:
-            return
-
-        try:
-            return super(SafeFileCache, self).get(*args, **kwargs)
-        except (LockError, OSError, IOError):
-            # We intentionally silence this error, if we can't access the cache
-            # then we can just skip caching and process the request as if
-            # caching wasn't enabled.
-            pass
-
-    def set(self, *args, **kwargs):
-        # If we don't have a directory, then the cache should be a no-op.
-        if self.directory is None:
-            return
-
-        try:
-            return super(SafeFileCache, self).set(*args, **kwargs)
-        except (LockError, OSError, IOError):
-            # We intentionally silence this error, if we can't access the cache
-            # then we can just skip caching and process the request as if
-            # caching wasn't enabled.
-            pass
-
-    def delete(self, *args, **kwargs):
-        # If we don't have a directory, then the cache should be a no-op.
-        if self.directory is None:
-            return
-
-        try:
-            return super(SafeFileCache, self).delete(*args, **kwargs)
-        except (LockError, OSError, IOError):
-            # We intentionally silence this error, if we can't access the cache
-            # then we can just skip caching and process the request as if
-            # caching wasn't enabled.
-            pass
-
-
-class InsecureHTTPAdapter(HTTPAdapter):
-
-    def cert_verify(self, conn, url, verify, cert):
-        conn.cert_reqs = 'CERT_NONE'
-        conn.ca_certs = None
-
-
-class PipSession(requests.Session):
-
-    timeout = None  # type: Optional[int]
-
-    def __init__(self, *args, **kwargs):
-        retries = kwargs.pop("retries", 0)
-        cache = kwargs.pop("cache", None)
-        insecure_hosts = kwargs.pop("insecure_hosts", [])
-
-        super(PipSession, self).__init__(*args, **kwargs)
-
-        # Attach our User Agent to the request
-        self.headers["User-Agent"] = user_agent()
-
-        # Attach our Authentication handler to the session
-        self.auth = MultiDomainBasicAuth()
-
-        # Create our urllib3.Retry instance which will allow us to customize
-        # how we handle retries.
-        retries = urllib3.Retry(
-            # Set the total number of retries that a particular request can
-            # have.
-            total=retries,
-
-            # A 503 error from PyPI typically means that the Fastly -> Origin
-            # connection got interrupted in some way. A 503 error in general
-            # is typically considered a transient error so we'll go ahead and
-            # retry it.
-            # A 500 may indicate transient error in Amazon S3
-            # A 520 or 527 - may indicate transient error in CloudFlare
-            status_forcelist=[500, 503, 520, 527],
-
-            # Add a small amount of back off between failed requests in
-            # order to prevent hammering the service.
-            backoff_factor=0.25,
-        )
-
-        # We want to _only_ cache responses on securely fetched origins. We do
-        # this because we can't validate the response of an insecurely fetched
-        # origin, and we don't want someone to be able to poison the cache and
-        # require manual eviction from the cache to fix it.
-        if cache:
-            secure_adapter = CacheControlAdapter(
-                cache=SafeFileCache(cache, use_dir_lock=True),
-                max_retries=retries,
-            )
-        else:
-            secure_adapter = HTTPAdapter(max_retries=retries)
-
-        # Our Insecure HTTPAdapter disables HTTPS validation. It does not
-        # support caching (see above) so we'll use it for all http:// URLs as
-        # well as any https:// host that we've marked as ignoring TLS errors
-        # for.
-        insecure_adapter = InsecureHTTPAdapter(max_retries=retries)
-
-        self.mount("https://", secure_adapter)
-        self.mount("http://", insecure_adapter)
-
-        # Enable file:// urls
-        self.mount("file://", LocalFSAdapter())
-
-        # We want to use a non-validating adapter for any requests which are
-        # deemed insecure.
-        for host in insecure_hosts:
-            self.mount("https://{}/".format(host), insecure_adapter)
-
-    def request(self, method, url, *args, **kwargs):
-        # Allow setting a default timeout on a session
-        kwargs.setdefault("timeout", self.timeout)
-
-        # Dispatch the actual request
-        return super(PipSession, self).request(method, url, *args, **kwargs)
-
-
-def get_file_content(url, comes_from=None, session=None):
-    # type: (str, Optional[str], Optional[PipSession]) -> Tuple[str, Text]
-    """Gets the content of a file; it may be a filename, file: URL, or
-    http: URL.  Returns (location, content).  Content is unicode.
-
-    :param url:         File path or url.
-    :param comes_from:  Origin description of requirements.
-    :param session:     Instance of pip.download.PipSession.
-    """
-    if session is None:
-        raise TypeError(
-            "get_file_content() missing 1 required keyword argument: 'session'"
-        )
-
-    match = _scheme_re.search(url)
-    if match:
-        scheme = match.group(1).lower()
-        if (scheme == 'file' and comes_from and
-                comes_from.startswith('http')):
-            raise InstallationError(
-                'Requirements file %s references URL %s, which is local'
-                % (comes_from, url))
-        if scheme == 'file':
-            path = url.split(':', 1)[1]
-            path = path.replace('\\', '/')
-            match = _url_slash_drive_re.match(path)
-            if match:
-                path = match.group(1) + ':' + path.split('|', 1)[1]
-            path = urllib_parse.unquote(path)
-            if path.startswith('/'):
-                path = '/' + path.lstrip('/')
-            url = path
-        else:
-            # FIXME: catch some errors
-            resp = session.get(url)
-            resp.raise_for_status()
-            return resp.url, resp.text
-    try:
-        with open(url, 'rb') as f:
-            content = auto_decode(f.read())
-    except IOError as exc:
-        raise InstallationError(
-            'Could not open requirements file: %s' % str(exc)
-        )
-    return url, content
-
-
-_scheme_re = re.compile(r'^(http|https|file):', re.I)
-_url_slash_drive_re = re.compile(r'/*([a-z])\|', re.I)
-
-
-def is_url(name):
-    # type: (Union[str, Text]) -> bool
-    """Returns true if the name looks like a URL"""
-    if ':' not in name:
-        return False
-    scheme = name.split(':', 1)[0].lower()
-    return scheme in ['http', 'https', 'file', 'ftp'] + vcs.all_schemes
-
-
-def url_to_path(url):
-    # type: (str) -> str
-    """
-    Convert a file: URL to a path.
-    """
-    assert url.startswith('file:'), (
-        "You can only turn file: urls into filenames (not %r)" % url)
-
-    _, netloc, path, _, _ = urllib_parse.urlsplit(url)
-
-    # if we have a UNC path, prepend UNC share notation
-    if netloc:
-        netloc = '\\\\' + netloc
-
-    path = urllib_request.url2pathname(netloc + path)
-    return path
-
-
-def path_to_url(path):
-    # type: (Union[str, Text]) -> str
-    """
-    Convert a path to a file: URL.  The path will be made absolute and have
-    quoted path parts.
-    """
-    path = os.path.normpath(os.path.abspath(path))
-    url = urllib_parse.urljoin('file:', urllib_request.pathname2url(path))
-    return url
-
-
-def is_archive_file(name):
-    # type: (str) -> bool
-    """Return True if `name` is a considered as an archive file."""
-    ext = splitext(name)[1].lower()
-    if ext in ARCHIVE_EXTENSIONS:
-        return True
-    return False
-
-
-def unpack_vcs_link(link, location):
-    vcs_backend = _get_used_vcs_backend(link)
-    vcs_backend.unpack(location)
-
-
-def _get_used_vcs_backend(link):
-    for backend in vcs.backends:
-        if link.scheme in backend.schemes:
-            vcs_backend = backend(link.url)
-            return vcs_backend
-
-
-def is_vcs_url(link):
-    # type: (Link) -> bool
-    return bool(_get_used_vcs_backend(link))
-
-
-def is_file_url(link):
-    # type: (Link) -> bool
-    return link.url.lower().startswith('file:')
-
-
-def is_dir_url(link):
-    # type: (Link) -> bool
-    """Return whether a file:// Link points to a directory.
-
-    ``link`` must not have any other scheme but file://. Call is_file_url()
-    first.
-
-    """
-    link_path = url_to_path(link.url_without_fragment)
-    return os.path.isdir(link_path)
-
-
-def _progress_indicator(iterable, *args, **kwargs):
-    return iterable
-
-
-def _download_url(
-    resp,  # type: Response
-    link,  # type: Link
-    content_file,  # type: IO
-    hashes,  # type: Hashes
-    progress_bar  # type: str
-):
-    # type: (...) -> None
-    try:
-        total_length = int(resp.headers['content-length'])
-    except (ValueError, KeyError, TypeError):
-        total_length = 0
-
-    cached_resp = getattr(resp, "from_cache", False)
-    if logger.getEffectiveLevel() > logging.INFO:
-        show_progress = False
-    elif cached_resp:
-        show_progress = False
-    elif total_length > (40 * 1000):
-        show_progress = True
-    elif not total_length:
-        show_progress = True
-    else:
-        show_progress = False
-
-    show_url = link.show_url
-
-    def resp_read(chunk_size):
-        try:
-            # Special case for urllib3.
-            for chunk in resp.raw.stream(
-                    chunk_size,
-                    # We use decode_content=False here because we don't
-                    # want urllib3 to mess with the raw bytes we get
-                    # from the server. If we decompress inside of
-                    # urllib3 then we cannot verify the checksum
-                    # because the checksum will be of the compressed
-                    # file. This breakage will only occur if the
-                    # server adds a Content-Encoding header, which
-                    # depends on how the server was configured:
-                    # - Some servers will notice that the file isn't a
-                    #   compressible file and will leave the file alone
-                    #   and with an empty Content-Encoding
-                    # - Some servers will notice that the file is
-                    #   already compressed and will leave the file
-                    #   alone and will add a Content-Encoding: gzip
-                    #   header
-                    # - Some servers won't notice anything at all and
-                    #   will take a file that's already been compressed
-                    #   and compress it again and set the
-                    #   Content-Encoding: gzip header
-                    #
-                    # By setting this not to decode automatically we
-                    # hope to eliminate problems with the second case.
-                    decode_content=False):
-                yield chunk
-        except AttributeError:
-            # Standard file-like object.
-            while True:
-                chunk = resp.raw.read(chunk_size)
-                if not chunk:
-                    break
-                yield chunk
-
-    def written_chunks(chunks):
-        for chunk in chunks:
-            content_file.write(chunk)
-            yield chunk
-
-    progress_indicator = _progress_indicator
-
-    if link.netloc == PyPI.netloc:
-        url = show_url
-    else:
-        url = link.url_without_fragment
-
-    if show_progress:  # We don't show progress on cached responses
-        progress_indicator = DownloadProgressProvider(progress_bar,
-                                                      max=total_length)
-        if total_length:
-            logger.info("Downloading %s (%s)", url, format_size(total_length))
-        else:
-            logger.info("Downloading %s", url)
-    elif cached_resp:
-        logger.info("Using cached %s", url)
-    else:
-        logger.info("Downloading %s", url)
-
-    logger.debug('Downloading from URL %s', link)
-
-    downloaded_chunks = written_chunks(
-        progress_indicator(
-            resp_read(CONTENT_CHUNK_SIZE),
-            CONTENT_CHUNK_SIZE
-        )
-    )
-    if hashes:
-        hashes.check_against_chunks(downloaded_chunks)
-    else:
-        consume(downloaded_chunks)
-
-
-def _copy_file(filename, location, link):
-    copy = True
-    download_location = os.path.join(location, link.filename)
-    if os.path.exists(download_location):
-        response = ask_path_exists(
-            'The file %s exists. (i)gnore, (w)ipe, (b)ackup, (a)abort' %
-            display_path(download_location), ('i', 'w', 'b', 'a'))
-        if response == 'i':
-            copy = False
-        elif response == 'w':
-            logger.warning('Deleting %s', display_path(download_location))
-            os.remove(download_location)
-        elif response == 'b':
-            dest_file = backup_dir(download_location)
-            logger.warning(
-                'Backing up %s to %s',
-                display_path(download_location),
-                display_path(dest_file),
-            )
-            shutil.move(download_location, dest_file)
-        elif response == 'a':
-            sys.exit(-1)
-    if copy:
-        shutil.copy(filename, download_location)
-        logger.info('Saved %s', display_path(download_location))
-
-
-def unpack_http_url(
-    link,  # type: Link
-    location,  # type: str
-    download_dir=None,  # type: Optional[str]
-    session=None,  # type: Optional[PipSession]
-    hashes=None,  # type: Optional[Hashes]
-    progress_bar="on"  # type: str
-):
-    # type: (...) -> None
-    if session is None:
-        raise TypeError(
-            "unpack_http_url() missing 1 required keyword argument: 'session'"
-        )
-
-    with TempDirectory(kind="unpack") as temp_dir:
-        # If a download dir is specified, is the file already downloaded there?
-        already_downloaded_path = None
-        if download_dir:
-            already_downloaded_path = _check_download_dir(link,
-                                                          download_dir,
-                                                          hashes)
-
-        if already_downloaded_path:
-            from_path = already_downloaded_path
-            content_type = mimetypes.guess_type(from_path)[0]
-        else:
-            # let's download to a tmp dir
-            from_path, content_type = _download_http_url(link,
-                                                         session,
-                                                         temp_dir.path,
-                                                         hashes,
-                                                         progress_bar)
-
-        # unpack the archive to the build dir location. even when only
-        # downloading archives, they have to be unpacked to parse dependencies
-        unpack_file(from_path, location, content_type, link)
-
-        # a download dir is specified; let's copy the archive there
-        if download_dir and not already_downloaded_path:
-            _copy_file(from_path, download_dir, link)
-
-        if not already_downloaded_path:
-            os.unlink(from_path)
-
-
-def unpack_file_url(
-    link,  # type: Link
-    location,  # type: str
-    download_dir=None,  # type: Optional[str]
-    hashes=None  # type: Optional[Hashes]
-):
-    # type: (...) -> None
-    """Unpack link into location.
-
-    If download_dir is provided and link points to a file, make a copy
-    of the link file inside download_dir.
-    """
-    link_path = url_to_path(link.url_without_fragment)
-
-    # If it's a url to a local directory
-    if is_dir_url(link):
-        if os.path.isdir(location):
-            rmtree(location)
-        shutil.copytree(link_path, location, symlinks=True)
-        if download_dir:
-            logger.info('Link is a directory, ignoring download_dir')
-        return
-
-    # If --require-hashes is off, `hashes` is either empty, the
-    # link's embedded hash, or MissingHashes; it is required to
-    # match. If --require-hashes is on, we are satisfied by any
-    # hash in `hashes` matching: a URL-based or an option-based
-    # one; no internet-sourced hash will be in `hashes`.
-    if hashes:
-        hashes.check_against_path(link_path)
-
-    # If a download dir is specified, is the file already there and valid?
-    already_downloaded_path = None
-    if download_dir:
-        already_downloaded_path = _check_download_dir(link,
-                                                      download_dir,
-                                                      hashes)
-
-    if already_downloaded_path:
-        from_path = already_downloaded_path
-    else:
-        from_path = link_path
-
-    content_type = mimetypes.guess_type(from_path)[0]
-
-    # unpack the archive to the build dir location. even when only downloading
-    # archives, they have to be unpacked to parse dependencies
-    unpack_file(from_path, location, content_type, link)
-
-    # a download dir is specified and not already downloaded
-    if download_dir and not already_downloaded_path:
-        _copy_file(from_path, download_dir, link)
-
-
-def _copy_dist_from_dir(link_path, location):
-    """Copy distribution files in `link_path` to `location`.
-
-    Invoked when user requests to install a local directory. E.g.:
-
-        pip install .
-        pip install ~/dev/git-repos/python-prompt-toolkit
-
-    """
-
-    # Note: This is currently VERY SLOW if you have a lot of data in the
-    # directory, because it copies everything with `shutil.copytree`.
-    # What it should really do is build an sdist and install that.
-    # See https://github.com/pypa/pip/issues/2195
-
-    if os.path.isdir(location):
-        rmtree(location)
-
-    # build an sdist
-    setup_py = 'setup.py'
-    sdist_args = [sys.executable]
-    sdist_args.append('-c')
-    sdist_args.append(SETUPTOOLS_SHIM % setup_py)
-    sdist_args.append('sdist')
-    sdist_args += ['--dist-dir', location]
-    logger.info('Running setup.py sdist for %s', link_path)
-
-    with indent_log():
-        call_subprocess(sdist_args, cwd=link_path, show_stdout=False)
-
-    # unpack sdist into `location`
-    sdist = os.path.join(location, os.listdir(location)[0])
-    logger.info('Unpacking sdist %s into %s', sdist, location)
-    unpack_file(sdist, location, content_type=None, link=None)
-
-
-class PipXmlrpcTransport(xmlrpc_client.Transport):
-    """Provide a `xmlrpclib.Transport` implementation via a `PipSession`
-    object.
-    """
-
-    def __init__(self, index_url, session, use_datetime=False):
-        xmlrpc_client.Transport.__init__(self, use_datetime)
-        index_parts = urllib_parse.urlparse(index_url)
-        self._scheme = index_parts.scheme
-        self._session = session
-
-    def request(self, host, handler, request_body, verbose=False):
-        parts = (self._scheme, host, handler, None, None, None)
-        url = urllib_parse.urlunparse(parts)
-        try:
-            headers = {'Content-Type': 'text/xml'}
-            response = self._session.post(url, data=request_body,
-                                          headers=headers, stream=True)
-            response.raise_for_status()
-            self.verbose = verbose
-            return self.parse_response(response.raw)
-        except requests.HTTPError as exc:
-            logger.critical(
-                "HTTP error %s while getting %s",
-                exc.response.status_code, url,
-            )
-            raise
-
-
-def unpack_url(
-    link,  # type: Optional[Link]
-    location,  # type: Optional[str]
-    download_dir=None,  # type: Optional[str]
-    only_download=False,  # type: bool
-    session=None,  # type: Optional[PipSession]
-    hashes=None,  # type: Optional[Hashes]
-    progress_bar="on"  # type: str
-):
-    # type: (...) -> None
-    """Unpack link.
-       If link is a VCS link:
-         if only_download, export into download_dir and ignore location
-          else unpack into location
-       for other types of link:
-         - unpack into location
-         - if download_dir, copy the file into download_dir
-         - if only_download, mark location for deletion
-
-    :param hashes: A Hashes object, one of whose embedded hashes must match,
-        or HashMismatch will be raised. If the Hashes is empty, no matches are
-        required, and unhashable types of requirements (like VCS ones, which
-        would ordinarily raise HashUnsupported) are allowed.
-    """
-    # non-editable vcs urls
-    if is_vcs_url(link):
-        unpack_vcs_link(link, location)
-
-    # file urls
-    elif is_file_url(link):
-        unpack_file_url(link, location, download_dir, hashes=hashes)
-
-    # http urls
-    else:
-        if session is None:
-            session = PipSession()
-
-        unpack_http_url(
-            link,
-            location,
-            download_dir,
-            session,
-            hashes=hashes,
-            progress_bar=progress_bar
-        )
-    if only_download:
-        write_delete_marker_file(location)
-
-
-def _download_http_url(
-    link,  # type: Link
-    session,  # type: PipSession
-    temp_dir,  # type: str
-    hashes,  # type: Hashes
-    progress_bar  # type: str
-):
-    # type: (...) -> Tuple[str, str]
-    """Download link url into temp_dir using provided session"""
-    target_url = link.url.split('#', 1)[0]
-    try:
-        resp = session.get(
-            target_url,
-            # We use Accept-Encoding: identity here because requests
-            # defaults to accepting compressed responses. This breaks in
-            # a variety of ways depending on how the server is configured.
-            # - Some servers will notice that the file isn't a compressible
-            #   file and will leave the file alone and with an empty
-            #   Content-Encoding
-            # - Some servers will notice that the file is already
-            #   compressed and will leave the file alone and will add a
-            #   Content-Encoding: gzip header
-            # - Some servers won't notice anything at all and will take
-            #   a file that's already been compressed and compress it again
-            #   and set the Content-Encoding: gzip header
-            # By setting this to request only the identity encoding We're
-            # hoping to eliminate the third case. Hopefully there does not
-            # exist a server which when given a file will notice it is
-            # already compressed and that you're not asking for a
-            # compressed file and will then decompress it before sending
-            # because if that's the case I don't think it'll ever be
-            # possible to make this work.
-            headers={"Accept-Encoding": "identity"},
-            stream=True,
-        )
-        resp.raise_for_status()
-    except requests.HTTPError as exc:
-        logger.critical(
-            "HTTP error %s while getting %s", exc.response.status_code, link,
-        )
-        raise
-
-    content_type = resp.headers.get('content-type', '')
-    filename = link.filename  # fallback
-    # Have a look at the Content-Disposition header for a better guess
-    content_disposition = resp.headers.get('content-disposition')
-    if content_disposition:
-        type, params = cgi.parse_header(content_disposition)
-        # We use ``or`` here because we don't want to use an "empty" value
-        # from the filename param.
-        filename = params.get('filename') or filename
-    ext = splitext(filename)[1]
-    if not ext:
-        ext = mimetypes.guess_extension(content_type)
-        if ext:
-            filename += ext
-    if not ext and link.url != resp.url:
-        ext = os.path.splitext(resp.url)[1]
-        if ext:
-            filename += ext
-    file_path = os.path.join(temp_dir, filename)
-    with open(file_path, 'wb') as content_file:
-        _download_url(resp, link, content_file, hashes, progress_bar)
-    return file_path, content_type
-
-
-def _check_download_dir(link, download_dir, hashes):
-    # type: (Link, str, Hashes) -> Optional[str]
-    """ Check download_dir for previously downloaded file with correct hash
-        If a correct file is found return its path else None
-    """
-    download_path = os.path.join(download_dir, link.filename)
-    if os.path.exists(download_path):
-        # If already downloaded, does its hash match?
-        logger.info('File was already downloaded %s', download_path)
-        if hashes:
-            try:
-                hashes.check_against_path(download_path)
-            except HashMismatch:
-                logger.warning(
-                    'Previously-downloaded file %s has bad hash. '
-                    'Re-downloading.',
-                    download_path
-                )
-                os.unlink(download_path)
-                return None
-        return download_path
-    return None

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/exceptions.py

@@ -1,274 +0,0 @@
-"""Exceptions used throughout package"""
-from __future__ import absolute_import
-
-from itertools import chain, groupby, repeat
-
-from pip._vendor.six import iteritems
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-
-
-class PipError(Exception):
-    """Base pip exception"""
-
-
-class ConfigurationError(PipError):
-    """General exception in configuration"""
-
-
-class InstallationError(PipError):
-    """General exception during installation"""
-
-
-class UninstallationError(PipError):
-    """General exception during uninstallation"""
-
-
-class DistributionNotFound(InstallationError):
-    """Raised when a distribution cannot be found to satisfy a requirement"""
-
-
-class RequirementsFileParseError(InstallationError):
-    """Raised when a general error occurs parsing a requirements file line."""
-
-
-class BestVersionAlreadyInstalled(PipError):
-    """Raised when the most up-to-date version of a package is already
-    installed."""
-
-
-class BadCommand(PipError):
-    """Raised when virtualenv or a command is not found"""
-
-
-class CommandError(PipError):
-    """Raised when there is an error in command-line arguments"""
-
-
-class PreviousBuildDirError(PipError):
-    """Raised when there's a previous conflicting build directory"""
-
-
-class InvalidWheelFilename(InstallationError):
-    """Invalid wheel filename."""
-
-
-class UnsupportedWheel(InstallationError):
-    """Unsupported wheel."""
-
-
-class HashErrors(InstallationError):
-    """Multiple HashError instances rolled into one for reporting"""
-
-    def __init__(self):
-        self.errors = []
-
-    def append(self, error):
-        self.errors.append(error)
-
-    def __str__(self):
-        lines = []
-        self.errors.sort(key=lambda e: e.order)
-        for cls, errors_of_cls in groupby(self.errors, lambda e: e.__class__):
-            lines.append(cls.head)
-            lines.extend(e.body() for e in errors_of_cls)
-        if lines:
-            return '\n'.join(lines)
-
-    def __nonzero__(self):
-        return bool(self.errors)
-
-    def __bool__(self):
-        return self.__nonzero__()
-
-
-class HashError(InstallationError):
-    """
-    A failure to verify a package against known-good hashes
-
-    :cvar order: An int sorting hash exception classes by difficulty of
-        recovery (lower being harder), so the user doesn't bother fretting
-        about unpinned packages when he has deeper issues, like VCS
-        dependencies, to deal with. Also keeps error reports in a
-        deterministic order.
-    :cvar head: A section heading for display above potentially many
-        exceptions of this kind
-    :ivar req: The InstallRequirement that triggered this error. This is
-        pasted on after the exception is instantiated, because it's not
-        typically available earlier.
-
-    """
-    req = None  # type: Optional[InstallRequirement]
-    head = ''
-
-    def body(self):
-        """Return a summary of me for display under the heading.
-
-        This default implementation simply prints a description of the
-        triggering requirement.
-
-        :param req: The InstallRequirement that provoked this error, with
-            populate_link() having already been called
-
-        """
-        return '    %s' % self._requirement_name()
-
-    def __str__(self):
-        return '%s\n%s' % (self.head, self.body())
-
-    def _requirement_name(self):
-        """Return a description of the requirement that triggered me.
-
-        This default implementation returns long description of the req, with
-        line numbers
-
-        """
-        return str(self.req) if self.req else 'unknown package'
-
-
-class VcsHashUnsupported(HashError):
-    """A hash was provided for a version-control-system-based requirement, but
-    we don't have a method for hashing those."""
-
-    order = 0
-    head = ("Can't verify hashes for these requirements because we don't "
-            "have a way to hash version control repositories:")
-
-
-class DirectoryUrlHashUnsupported(HashError):
-    """A hash was provided for a version-control-system-based requirement, but
-    we don't have a method for hashing those."""
-
-    order = 1
-    head = ("Can't verify hashes for these file:// requirements because they "
-            "point to directories:")
-
-
-class HashMissing(HashError):
-    """A hash was needed for a requirement but is absent."""
-
-    order = 2
-    head = ('Hashes are required in --require-hashes mode, but they are '
-            'missing from some requirements. Here is a list of those '
-            'requirements along with the hashes their downloaded archives '
-            'actually had. Add lines like these to your requirements files to '
-            'prevent tampering. (If you did not enable --require-hashes '
-            'manually, note that it turns on automatically when any package '
-            'has a hash.)')
-
-    def __init__(self, gotten_hash):
-        """
-        :param gotten_hash: The hash of the (possibly malicious) archive we
-            just downloaded
-        """
-        self.gotten_hash = gotten_hash
-
-    def body(self):
-        # Dodge circular import.
-        from pip._internal.utils.hashes import FAVORITE_HASH
-
-        package = None
-        if self.req:
-            # In the case of URL-based requirements, display the original URL
-            # seen in the requirements file rather than the package name,
-            # so the output can be directly copied into the requirements file.
-            package = (self.req.original_link if self.req.original_link
-                       # In case someone feeds something downright stupid
-                       # to InstallRequirement's constructor.
-                       else getattr(self.req, 'req', None))
-        return '    %s --hash=%s:%s' % (package or 'unknown package',
-                                        FAVORITE_HASH,
-                                        self.gotten_hash)
-
-
-class HashUnpinned(HashError):
-    """A requirement had a hash specified but was not pinned to a specific
-    version."""
-
-    order = 3
-    head = ('In --require-hashes mode, all requirements must have their '
-            'versions pinned with ==. These do not:')
-
-
-class HashMismatch(HashError):
-    """
-    Distribution file hash values don't match.
-
-    :ivar package_name: The name of the package that triggered the hash
-        mismatch. Feel free to write to this after the exception is raise to
-        improve its error message.
-
-    """
-    order = 4
-    head = ('THESE PACKAGES DO NOT MATCH THE HASHES FROM THE REQUIREMENTS '
-            'FILE. If you have updated the package versions, please update '
-            'the hashes. Otherwise, examine the package contents carefully; '
-            'someone may have tampered with them.')
-
-    def __init__(self, allowed, gots):
-        """
-        :param allowed: A dict of algorithm names pointing to lists of allowed
-            hex digests
-        :param gots: A dict of algorithm names pointing to hashes we
-            actually got from the files under suspicion
-        """
-        self.allowed = allowed
-        self.gots = gots
-
-    def body(self):
-        return '    %s:\n%s' % (self._requirement_name(),
-                                self._hash_comparison())
-
-    def _hash_comparison(self):
-        """
-        Return a comparison of actual and expected hash values.
-
-        Example::
-
-               Expected sha256 abcdeabcdeabcdeabcdeabcdeabcdeabcdeabcdeabcde
-                            or 123451234512345123451234512345123451234512345
-                    Got        bcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdefbcdef
-
-        """
-        def hash_then_or(hash_name):
-            # For now, all the decent hashes have 6-char names, so we can get
-            # away with hard-coding space literals.
-            return chain([hash_name], repeat('    or'))
-
-        lines = []
-        for hash_name, expecteds in iteritems(self.allowed):
-            prefix = hash_then_or(hash_name)
-            lines.extend(('        Expected %s %s' % (next(prefix), e))
-                         for e in expecteds)
-            lines.append('             Got        %s\n' %
-                         self.gots[hash_name].hexdigest())
-            prefix = '    or'
-        return '\n'.join(lines)
-
-
-class UnsupportedPythonVersion(InstallationError):
-    """Unsupported python version according to Requires-Python package
-    metadata."""
-
-
-class ConfigurationFileCouldNotBeLoaded(ConfigurationError):
-    """When there are errors while loading a configuration file
-    """
-
-    def __init__(self, reason="could not be loaded", fname=None, error=None):
-        super(ConfigurationFileCouldNotBeLoaded, self).__init__(error)
-        self.reason = reason
-        self.fname = fname
-        self.error = error
-
-    def __str__(self):
-        if self.fname is not None:
-            message_part = " in {}.".format(self.fname)
-        else:
-            assert self.error is not None
-            message_part = ".\n{}\n".format(self.error.message)
-        return "Configuration file {}{}".format(self.reason, message_part)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/index.py

@@ -1,990 +0,0 @@
-"""Routines related to PyPI, indexes"""
-from __future__ import absolute_import
-
-import cgi
-import itertools
-import logging
-import mimetypes
-import os
-import posixpath
-import re
-import sys
-from collections import namedtuple
-
-from pip._vendor import html5lib, requests, six
-from pip._vendor.distlib.compat import unescape
-from pip._vendor.packaging import specifiers
-from pip._vendor.packaging.utils import canonicalize_name
-from pip._vendor.packaging.version import parse as parse_version
-from pip._vendor.requests.exceptions import RetryError, SSLError
-from pip._vendor.six.moves.urllib import parse as urllib_parse
-from pip._vendor.six.moves.urllib import request as urllib_request
-
-from pip._internal.download import HAS_TLS, is_url, path_to_url, url_to_path
-from pip._internal.exceptions import (
-    BestVersionAlreadyInstalled, DistributionNotFound, InvalidWheelFilename,
-    UnsupportedWheel,
-)
-from pip._internal.models.candidate import InstallationCandidate
-from pip._internal.models.format_control import FormatControl
-from pip._internal.models.index import PyPI
-from pip._internal.models.link import Link
-from pip._internal.pep425tags import get_supported
-from pip._internal.utils.compat import ipaddress
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import (
-    ARCHIVE_EXTENSIONS, SUPPORTED_EXTENSIONS, WHEEL_EXTENSION, normalize_path,
-    redact_password_from_url,
-)
-from pip._internal.utils.packaging import check_requires_python
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.wheel import Wheel
-
-if MYPY_CHECK_RUNNING:
-    from logging import Logger  # noqa: F401
-    from typing import (  # noqa: F401
-        Tuple, Optional, Any, List, Union, Callable, Set, Sequence,
-        Iterable, MutableMapping
-    )
-    from pip._vendor.packaging.version import _BaseVersion  # noqa: F401
-    from pip._vendor.requests import Response  # noqa: F401
-    from pip._internal.req import InstallRequirement  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-
-    SecureOrigin = Tuple[str, str, Optional[str]]
-    BuildTag = Tuple[Any, ...]  # either emply tuple or Tuple[int, str]
-    CandidateSortingKey = Tuple[int, _BaseVersion, BuildTag, Optional[int]]
-
-__all__ = ['FormatControl', 'PackageFinder']
-
-
-SECURE_ORIGINS = [
-    # protocol, hostname, port
-    # Taken from Chrome's list of secure origins (See: http://bit.ly/1qrySKC)
-    ("https", "*", "*"),
-    ("*", "localhost", "*"),
-    ("*", "127.0.0.0/8", "*"),
-    ("*", "::1/128", "*"),
-    ("file", "*", None),
-    # ssh is always secure.
-    ("ssh", "*", "*"),
-]  # type: List[SecureOrigin]
-
-
-logger = logging.getLogger(__name__)
-
-
-def _match_vcs_scheme(url):
-    # type: (str) -> Optional[str]
-    """Look for VCS schemes in the URL.
-
-    Returns the matched VCS scheme, or None if there's no match.
-    """
-    from pip._internal.vcs import VcsSupport
-    for scheme in VcsSupport.schemes:
-        if url.lower().startswith(scheme) and url[len(scheme)] in '+:':
-            return scheme
-    return None
-
-
-def _is_url_like_archive(url):
-    # type: (str) -> bool
-    """Return whether the URL looks like an archive.
-    """
-    filename = Link(url).filename
-    for bad_ext in ARCHIVE_EXTENSIONS:
-        if filename.endswith(bad_ext):
-            return True
-    return False
-
-
-class _NotHTML(Exception):
-    def __init__(self, content_type, request_desc):
-        # type: (str, str) -> None
-        super(_NotHTML, self).__init__(content_type, request_desc)
-        self.content_type = content_type
-        self.request_desc = request_desc
-
-
-def _ensure_html_header(response):
-    # type: (Response) -> None
-    """Check the Content-Type header to ensure the response contains HTML.
-
-    Raises `_NotHTML` if the content type is not text/html.
-    """
-    content_type = response.headers.get("Content-Type", "")
-    if not content_type.lower().startswith("text/html"):
-        raise _NotHTML(content_type, response.request.method)
-
-
-class _NotHTTP(Exception):
-    pass
-
-
-def _ensure_html_response(url, session):
-    # type: (str, PipSession) -> None
-    """Send a HEAD request to the URL, and ensure the response contains HTML.
-
-    Raises `_NotHTTP` if the URL is not available for a HEAD request, or
-    `_NotHTML` if the content type is not text/html.
-    """
-    scheme, netloc, path, query, fragment = urllib_parse.urlsplit(url)
-    if scheme not in {'http', 'https'}:
-        raise _NotHTTP()
-
-    resp = session.head(url, allow_redirects=True)
-    resp.raise_for_status()
-
-    _ensure_html_header(resp)
-
-
-def _get_html_response(url, session):
-    # type: (str, PipSession) -> Response
-    """Access an HTML page with GET, and return the response.
-
-    This consists of three parts:
-
-    1. If the URL looks suspiciously like an archive, send a HEAD first to
-       check the Content-Type is HTML, to avoid downloading a large file.
-       Raise `_NotHTTP` if the content type cannot be determined, or
-       `_NotHTML` if it is not HTML.
-    2. Actually perform the request. Raise HTTP exceptions on network failures.
-    3. Check the Content-Type header to make sure we got HTML, and raise
-       `_NotHTML` otherwise.
-    """
-    if _is_url_like_archive(url):
-        _ensure_html_response(url, session=session)
-
-    logger.debug('Getting page %s', url)
-
-    resp = session.get(
-        url,
-        headers={
-            "Accept": "text/html",
-            # We don't want to blindly returned cached data for
-            # /simple/, because authors generally expecting that
-            # twine upload && pip install will function, but if
-            # they've done a pip install in the last ~10 minutes
-            # it won't. Thus by setting this to zero we will not
-            # blindly use any cached data, however the benefit of
-            # using max-age=0 instead of no-cache, is that we will
-            # still support conditional requests, so we will still
-            # minimize traffic sent in cases where the page hasn't
-            # changed at all, we will just always incur the round
-            # trip for the conditional GET now instead of only
-            # once per 10 minutes.
-            # For more information, please see pypa/pip#5670.
-            "Cache-Control": "max-age=0",
-        },
-    )
-    resp.raise_for_status()
-
-    # The check for archives above only works if the url ends with
-    # something that looks like an archive. However that is not a
-    # requirement of an url. Unless we issue a HEAD request on every
-    # url we cannot know ahead of time for sure if something is HTML
-    # or not. However we can check after we've downloaded it.
-    _ensure_html_header(resp)
-
-    return resp
-
-
-def _handle_get_page_fail(
-    link,  # type: Link
-    reason,  # type: Union[str, Exception]
-    meth=None  # type: Optional[Callable[..., None]]
-):
-    # type: (...) -> None
-    if meth is None:
-        meth = logger.debug
-    meth("Could not fetch URL %s: %s - skipping", link, reason)
-
-
-def _get_html_page(link, session=None):
-    # type: (Link, Optional[PipSession]) -> Optional[HTMLPage]
-    if session is None:
-        raise TypeError(
-            "_get_html_page() missing 1 required keyword argument: 'session'"
-        )
-
-    url = link.url.split('#', 1)[0]
-
-    # Check for VCS schemes that do not support lookup as web pages.
-    vcs_scheme = _match_vcs_scheme(url)
-    if vcs_scheme:
-        logger.debug('Cannot look at %s URL %s', vcs_scheme, link)
-        return None
-
-    # Tack index.html onto file:// URLs that point to directories
-    scheme, _, path, _, _, _ = urllib_parse.urlparse(url)
-    if (scheme == 'file' and os.path.isdir(urllib_request.url2pathname(path))):
-        # add trailing slash if not present so urljoin doesn't trim
-        # final segment
-        if not url.endswith('/'):
-            url += '/'
-        url = urllib_parse.urljoin(url, 'index.html')
-        logger.debug(' file: URL is directory, getting %s', url)
-
-    try:
-        resp = _get_html_response(url, session=session)
-    except _NotHTTP as exc:
-        logger.debug(
-            'Skipping page %s because it looks like an archive, and cannot '
-            'be checked by HEAD.', link,
-        )
-    except _NotHTML as exc:
-        logger.debug(
-            'Skipping page %s because the %s request got Content-Type: %s',
-            link, exc.request_desc, exc.content_type,
-        )
-    except requests.HTTPError as exc:
-        _handle_get_page_fail(link, exc)
-    except RetryError as exc:
-        _handle_get_page_fail(link, exc)
-    except SSLError as exc:
-        reason = "There was a problem confirming the ssl certificate: "
-        reason += str(exc)
-        _handle_get_page_fail(link, reason, meth=logger.info)
-    except requests.ConnectionError as exc:
-        _handle_get_page_fail(link, "connection error: %s" % exc)
-    except requests.Timeout:
-        _handle_get_page_fail(link, "timed out")
-    else:
-        return HTMLPage(resp.content, resp.url, resp.headers)
-    return None
-
-
-class PackageFinder(object):
-    """This finds packages.
-
-    This is meant to match easy_install's technique for looking for
-    packages, by reading pages and looking for appropriate links.
-    """
-
-    def __init__(
-        self,
-        find_links,  # type: List[str]
-        index_urls,  # type: List[str]
-        allow_all_prereleases=False,  # type: bool
-        trusted_hosts=None,  # type: Optional[Iterable[str]]
-        session=None,  # type: Optional[PipSession]
-        format_control=None,  # type: Optional[FormatControl]
-        platform=None,  # type: Optional[str]
-        versions=None,  # type: Optional[List[str]]
-        abi=None,  # type: Optional[str]
-        implementation=None,  # type: Optional[str]
-        prefer_binary=False  # type: bool
-    ):
-        # type: (...) -> None
-        """Create a PackageFinder.
-
-        :param format_control: A FormatControl object or None. Used to control
-            the selection of source packages / binary packages when consulting
-            the index and links.
-        :param platform: A string or None. If None, searches for packages
-            that are supported by the current system. Otherwise, will find
-            packages that can be built on the platform passed in. These
-            packages will only be downloaded for distribution: they will
-            not be built locally.
-        :param versions: A list of strings or None. This is passed directly
-            to pep425tags.py in the get_supported() method.
-        :param abi: A string or None. This is passed directly
-            to pep425tags.py in the get_supported() method.
-        :param implementation: A string or None. This is passed directly
-            to pep425tags.py in the get_supported() method.
-        """
-        if session is None:
-            raise TypeError(
-                "PackageFinder() missing 1 required keyword argument: "
-                "'session'"
-            )
-
-        # Build find_links. If an argument starts with ~, it may be
-        # a local file relative to a home directory. So try normalizing
-        # it and if it exists, use the normalized version.
-        # This is deliberately conservative - it might be fine just to
-        # blindly normalize anything starting with a ~...
-        self.find_links = []  # type: List[str]
-        for link in find_links:
-            if link.startswith('~'):
-                new_link = normalize_path(link)
-                if os.path.exists(new_link):
-                    link = new_link
-            self.find_links.append(link)
-
-        self.index_urls = index_urls
-
-        # These are boring links that have already been logged somehow:
-        self.logged_links = set()  # type: Set[Link]
-
-        self.format_control = format_control or FormatControl(set(), set())
-
-        # Domains that we won't emit warnings for when not using HTTPS
-        self.secure_origins = [
-            ("*", host, "*")
-            for host in (trusted_hosts if trusted_hosts else [])
-        ]  # type: List[SecureOrigin]
-
-        # Do we want to allow _all_ pre-releases?
-        self.allow_all_prereleases = allow_all_prereleases
-
-        # The Session we'll use to make requests
-        self.session = session
-
-        # The valid tags to check potential found wheel candidates against
-        self.valid_tags = get_supported(
-            versions=versions,
-            platform=platform,
-            abi=abi,
-            impl=implementation,
-        )
-
-        # Do we prefer old, but valid, binary dist over new source dist
-        self.prefer_binary = prefer_binary
-
-        # If we don't have TLS enabled, then WARN if anyplace we're looking
-        # relies on TLS.
-        if not HAS_TLS:
-            for link in itertools.chain(self.index_urls, self.find_links):
-                parsed = urllib_parse.urlparse(link)
-                if parsed.scheme == "https":
-                    logger.warning(
-                        "pip is configured with locations that require "
-                        "TLS/SSL, however the ssl module in Python is not "
-                        "available."
-                    )
-                    break
-
-    def get_formatted_locations(self):
-        # type: () -> str
-        lines = []
-        if self.index_urls and self.index_urls != [PyPI.simple_url]:
-            lines.append(
-                "Looking in indexes: {}".format(", ".join(
-                    redact_password_from_url(url) for url in self.index_urls))
-            )
-        if self.find_links:
-            lines.append(
-                "Looking in links: {}".format(", ".join(self.find_links))
-            )
-        return "\n".join(lines)
-
-    @staticmethod
-    def _sort_locations(locations, expand_dir=False):
-        # type: (Sequence[str], bool) -> Tuple[List[str], List[str]]
-        """
-        Sort locations into "files" (archives) and "urls", and return
-        a pair of lists (files,urls)
-        """
-        files = []
-        urls = []
-
-        # puts the url for the given file path into the appropriate list
-        def sort_path(path):
-            url = path_to_url(path)
-            if mimetypes.guess_type(url, strict=False)[0] == 'text/html':
-                urls.append(url)
-            else:
-                files.append(url)
-
-        for url in locations:
-
-            is_local_path = os.path.exists(url)
-            is_file_url = url.startswith('file:')
-
-            if is_local_path or is_file_url:
-                if is_local_path:
-                    path = url
-                else:
-                    path = url_to_path(url)
-                if os.path.isdir(path):
-                    if expand_dir:
-                        path = os.path.realpath(path)
-                        for item in os.listdir(path):
-                            sort_path(os.path.join(path, item))
-                    elif is_file_url:
-                        urls.append(url)
-                    else:
-                        logger.warning(
-                            "Path '{0}' is ignored: "
-                            "it is a directory.".format(path),
-                        )
-                elif os.path.isfile(path):
-                    sort_path(path)
-                else:
-                    logger.warning(
-                        "Url '%s' is ignored: it is neither a file "
-                        "nor a directory.", url,
-                    )
-            elif is_url(url):
-                # Only add url with clear scheme
-                urls.append(url)
-            else:
-                logger.warning(
-                    "Url '%s' is ignored. It is either a non-existing "
-                    "path or lacks a specific scheme.", url,
-                )
-
-        return files, urls
-
-    def _candidate_sort_key(self, candidate):
-        # type: (InstallationCandidate) -> CandidateSortingKey
-        """
-        Function used to generate link sort key for link tuples.
-        The greater the return value, the more preferred it is.
-        If not finding wheels, then sorted by version only.
-        If finding wheels, then the sort order is by version, then:
-          1. existing installs
-          2. wheels ordered via Wheel.support_index_min(self.valid_tags)
-          3. source archives
-        If prefer_binary was set, then all wheels are sorted above sources.
-        Note: it was considered to embed this logic into the Link
-              comparison operators, but then different sdist links
-              with the same version, would have to be considered equal
-        """
-        support_num = len(self.valid_tags)
-        build_tag = tuple()  # type: BuildTag
-        binary_preference = 0
-        if candidate.location.is_wheel:
-            # can raise InvalidWheelFilename
-            wheel = Wheel(candidate.location.filename)
-            if not wheel.supported(self.valid_tags):
-                raise UnsupportedWheel(
-                    "%s is not a supported wheel for this platform. It "
-                    "can't be sorted." % wheel.filename
-                )
-            if self.prefer_binary:
-                binary_preference = 1
-            pri = -(wheel.support_index_min(self.valid_tags))
-            if wheel.build_tag is not None:
-                match = re.match(r'^(\d+)(.*)$', wheel.build_tag)
-                build_tag_groups = match.groups()
-                build_tag = (int(build_tag_groups[0]), build_tag_groups[1])
-        else:  # sdist
-            pri = -(support_num)
-        return (binary_preference, candidate.version, build_tag, pri)
-
-    def _validate_secure_origin(self, logger, location):
-        # type: (Logger, Link) -> bool
-        # Determine if this url used a secure transport mechanism
-        parsed = urllib_parse.urlparse(str(location))
-        origin = (parsed.scheme, parsed.hostname, parsed.port)
-
-        # The protocol to use to see if the protocol matches.
-        # Don't count the repository type as part of the protocol: in
-        # cases such as "git+ssh", only use "ssh". (I.e., Only verify against
-        # the last scheme.)
-        protocol = origin[0].rsplit('+', 1)[-1]
-
-        # Determine if our origin is a secure origin by looking through our
-        # hardcoded list of secure origins, as well as any additional ones
-        # configured on this PackageFinder instance.
-        for secure_origin in (SECURE_ORIGINS + self.secure_origins):
-            if protocol != secure_origin[0] and secure_origin[0] != "*":
-                continue
-
-            try:
-                # We need to do this decode dance to ensure that we have a
-                # unicode object, even on Python 2.x.
-                addr = ipaddress.ip_address(
-                    origin[1]
-                    if (
-                        isinstance(origin[1], six.text_type) or
-                        origin[1] is None
-                    )
-                    else origin[1].decode("utf8")
-                )
-                network = ipaddress.ip_network(
-                    secure_origin[1]
-                    if isinstance(secure_origin[1], six.text_type)
-                    # setting secure_origin[1] to proper Union[bytes, str]
-                    # creates problems in other places
-                    else secure_origin[1].decode("utf8")  # type: ignore
-                )
-            except ValueError:
-                # We don't have both a valid address or a valid network, so
-                # we'll check this origin against hostnames.
-                if (origin[1] and
-                        origin[1].lower() != secure_origin[1].lower() and
-                        secure_origin[1] != "*"):
-                    continue
-            else:
-                # We have a valid address and network, so see if the address
-                # is contained within the network.
-                if addr not in network:
-                    continue
-
-            # Check to see if the port patches
-            if (origin[2] != secure_origin[2] and
-                    secure_origin[2] != "*" and
-                    secure_origin[2] is not None):
-                continue
-
-            # If we've gotten here, then this origin matches the current
-            # secure origin and we should return True
-            return True
-
-        # If we've gotten to this point, then the origin isn't secure and we
-        # will not accept it as a valid location to search. We will however
-        # log a warning that we are ignoring it.
-        logger.warning(
-            "The repository located at %s is not a trusted or secure host and "
-            "is being ignored. If this repository is available via HTTPS we "
-            "recommend you use HTTPS instead, otherwise you may silence "
-            "this warning and allow it anyway with '--trusted-host %s'.",
-            parsed.hostname,
-            parsed.hostname,
-        )
-
-        return False
-
-    def _get_index_urls_locations(self, project_name):
-        # type: (str) -> List[str]
-        """Returns the locations found via self.index_urls
-
-        Checks the url_name on the main (first in the list) index and
-        use this url_name to produce all locations
-        """
-
-        def mkurl_pypi_url(url):
-            loc = posixpath.join(
-                url,
-                urllib_parse.quote(canonicalize_name(project_name)))
-            # For maximum compatibility with easy_install, ensure the path
-            # ends in a trailing slash.  Although this isn't in the spec
-            # (and PyPI can handle it without the slash) some other index
-            # implementations might break if they relied on easy_install's
-            # behavior.
-            if not loc.endswith('/'):
-                loc = loc + '/'
-            return loc
-
-        return [mkurl_pypi_url(url) for url in self.index_urls]
-
-    def find_all_candidates(self, project_name):
-        # type: (str) -> List[Optional[InstallationCandidate]]
-        """Find all available InstallationCandidate for project_name
-
-        This checks index_urls and find_links.
-        All versions found are returned as an InstallationCandidate list.
-
-        See _link_package_versions for details on which files are accepted
-        """
-        index_locations = self._get_index_urls_locations(project_name)
-        index_file_loc, index_url_loc = self._sort_locations(index_locations)
-        fl_file_loc, fl_url_loc = self._sort_locations(
-            self.find_links, expand_dir=True,
-        )
-
-        file_locations = (Link(url) for url in itertools.chain(
-            index_file_loc, fl_file_loc,
-        ))
-
-        # We trust every url that the user has given us whether it was given
-        #   via --index-url or --find-links.
-        # We want to filter out any thing which does not have a secure origin.
-        url_locations = [
-            link for link in itertools.chain(
-                (Link(url) for url in index_url_loc),
-                (Link(url) for url in fl_url_loc),
-            )
-            if self._validate_secure_origin(logger, link)
-        ]
-
-        logger.debug('%d location(s) to search for versions of %s:',
-                     len(url_locations), project_name)
-
-        for location in url_locations:
-            logger.debug('* %s', location)
-
-        canonical_name = canonicalize_name(project_name)
-        formats = self.format_control.get_allowed_formats(canonical_name)
-        search = Search(project_name, canonical_name, formats)
-        find_links_versions = self._package_versions(
-            # We trust every directly linked archive in find_links
-            (Link(url, '-f') for url in self.find_links),
-            search
-        )
-
-        page_versions = []
-        for page in self._get_pages(url_locations, project_name):
-            logger.debug('Analyzing links from page %s', page.url)
-            with indent_log():
-                page_versions.extend(
-                    self._package_versions(page.iter_links(), search)
-                )
-
-        file_versions = self._package_versions(file_locations, search)
-        if file_versions:
-            file_versions.sort(reverse=True)
-            logger.debug(
-                'Local files found: %s',
-                ', '.join([
-                    url_to_path(candidate.location.url)
-                    for candidate in file_versions
-                ])
-            )
-
-        # This is an intentional priority ordering
-        return file_versions + find_links_versions + page_versions
-
-    def find_requirement(self, req, upgrade):
-        # type: (InstallRequirement, bool) -> Optional[Link]
-        """Try to find a Link matching req
-
-        Expects req, an InstallRequirement and upgrade, a boolean
-        Returns a Link if found,
-        Raises DistributionNotFound or BestVersionAlreadyInstalled otherwise
-        """
-        all_candidates = self.find_all_candidates(req.name)
-
-        # Filter out anything which doesn't match our specifier
-        compatible_versions = set(
-            req.specifier.filter(
-                # We turn the version object into a str here because otherwise
-                # when we're debundled but setuptools isn't, Python will see
-                # packaging.version.Version and
-                # pkg_resources._vendor.packaging.version.Version as different
-                # types. This way we'll use a str as a common data interchange
-                # format. If we stop using the pkg_resources provided specifier
-                # and start using our own, we can drop the cast to str().
-                [str(c.version) for c in all_candidates],
-                prereleases=(
-                    self.allow_all_prereleases
-                    if self.allow_all_prereleases else None
-                ),
-            )
-        )
-        applicable_candidates = [
-            # Again, converting to str to deal with debundling.
-            c for c in all_candidates if str(c.version) in compatible_versions
-        ]
-
-        if applicable_candidates:
-            best_candidate = max(applicable_candidates,
-                                 key=self._candidate_sort_key)
-        else:
-            best_candidate = None
-
-        if req.satisfied_by is not None:
-            installed_version = parse_version(req.satisfied_by.version)
-        else:
-            installed_version = None
-
-        if installed_version is None and best_candidate is None:
-            logger.critical(
-                'Could not find a version that satisfies the requirement %s '
-                '(from versions: %s)',
-                req,
-                ', '.join(
-                    sorted(
-                        {str(c.version) for c in all_candidates},
-                        key=parse_version,
-                    )
-                )
-            )
-
-            raise DistributionNotFound(
-                'No matching distribution found for %s' % req
-            )
-
-        best_installed = False
-        if installed_version and (
-                best_candidate is None or
-                best_candidate.version <= installed_version):
-            best_installed = True
-
-        if not upgrade and installed_version is not None:
-            if best_installed:
-                logger.debug(
-                    'Existing installed version (%s) is most up-to-date and '
-                    'satisfies requirement',
-                    installed_version,
-                )
-            else:
-                logger.debug(
-                    'Existing installed version (%s) satisfies requirement '
-                    '(most up-to-date version is %s)',
-                    installed_version,
-                    best_candidate.version,
-                )
-            return None
-
-        if best_installed:
-            # We have an existing version, and its the best version
-            logger.debug(
-                'Installed version (%s) is most up-to-date (past versions: '
-                '%s)',
-                installed_version,
-                ', '.join(sorted(compatible_versions, key=parse_version)) or
-                "none",
-            )
-            raise BestVersionAlreadyInstalled
-
-        logger.debug(
-            'Using version %s (newest of versions: %s)',
-            best_candidate.version,
-            ', '.join(sorted(compatible_versions, key=parse_version))
-        )
-        return best_candidate.location
-
-    def _get_pages(self, locations, project_name):
-        # type: (Iterable[Link], str) -> Iterable[HTMLPage]
-        """
-        Yields (page, page_url) from the given locations, skipping
-        locations that have errors.
-        """
-        seen = set()  # type: Set[Link]
-        for location in locations:
-            if location in seen:
-                continue
-            seen.add(location)
-
-            page = _get_html_page(location, session=self.session)
-            if page is None:
-                continue
-
-            yield page
-
-    _py_version_re = re.compile(r'-py([123]\.?[0-9]?)$')
-
-    def _sort_links(self, links):
-        # type: (Iterable[Link]) -> List[Link]
-        """
-        Returns elements of links in order, non-egg links first, egg links
-        second, while eliminating duplicates
-        """
-        eggs, no_eggs = [], []
-        seen = set()  # type: Set[Link]
-        for link in links:
-            if link not in seen:
-                seen.add(link)
-                if link.egg_fragment:
-                    eggs.append(link)
-                else:
-                    no_eggs.append(link)
-        return no_eggs + eggs
-
-    def _package_versions(
-        self,
-        links,  # type: Iterable[Link]
-        search  # type: Search
-    ):
-        # type: (...) -> List[Optional[InstallationCandidate]]
-        result = []
-        for link in self._sort_links(links):
-            v = self._link_package_versions(link, search)
-            if v is not None:
-                result.append(v)
-        return result
-
-    def _log_skipped_link(self, link, reason):
-        # type: (Link, str) -> None
-        if link not in self.logged_links:
-            logger.debug('Skipping link %s; %s', link, reason)
-            self.logged_links.add(link)
-
-    def _link_package_versions(self, link, search):
-        # type: (Link, Search) -> Optional[InstallationCandidate]
-        """Return an InstallationCandidate or None"""
-        version = None
-        if link.egg_fragment:
-            egg_info = link.egg_fragment
-            ext = link.ext
-        else:
-            egg_info, ext = link.splitext()
-            if not ext:
-                self._log_skipped_link(link, 'not a file')
-                return None
-            if ext not in SUPPORTED_EXTENSIONS:
-                self._log_skipped_link(
-                    link, 'unsupported archive format: %s' % ext,
-                )
-                return None
-            if "binary" not in search.formats and ext == WHEEL_EXTENSION:
-                self._log_skipped_link(
-                    link, 'No binaries permitted for %s' % search.supplied,
-                )
-                return None
-            if "macosx10" in link.path and ext == '.zip':
-                self._log_skipped_link(link, 'macosx10 one')
-                return None
-            if ext == WHEEL_EXTENSION:
-                try:
-                    wheel = Wheel(link.filename)
-                except InvalidWheelFilename:
-                    self._log_skipped_link(link, 'invalid wheel filename')
-                    return None
-                if canonicalize_name(wheel.name) != search.canonical:
-                    self._log_skipped_link(
-                        link, 'wrong project name (not %s)' % search.supplied)
-                    return None
-
-                if not wheel.supported(self.valid_tags):
-                    self._log_skipped_link(
-                        link, 'it is not compatible with this Python')
-                    return None
-
-                version = wheel.version
-
-        # This should be up by the search.ok_binary check, but see issue 2700.
-        if "source" not in search.formats and ext != WHEEL_EXTENSION:
-            self._log_skipped_link(
-                link, 'No sources permitted for %s' % search.supplied,
-            )
-            return None
-
-        if not version:
-            version = _egg_info_matches(egg_info, search.canonical)
-        if not version:
-            self._log_skipped_link(
-                link, 'Missing project version for %s' % search.supplied)
-            return None
-
-        match = self._py_version_re.search(version)
-        if match:
-            version = version[:match.start()]
-            py_version = match.group(1)
-            if py_version != sys.version[:3]:
-                self._log_skipped_link(
-                    link, 'Python version is incorrect')
-                return None
-        try:
-            support_this_python = check_requires_python(link.requires_python)
-        except specifiers.InvalidSpecifier:
-            logger.debug("Package %s has an invalid Requires-Python entry: %s",
-                         link.filename, link.requires_python)
-            support_this_python = True
-
-        if not support_this_python:
-            logger.debug("The package %s is incompatible with the python "
-                         "version in use. Acceptable python versions are: %s",
-                         link, link.requires_python)
-            return None
-        logger.debug('Found link %s, version: %s', link, version)
-
-        return InstallationCandidate(search.supplied, version, link)
-
-
-def _find_name_version_sep(egg_info, canonical_name):
-    # type: (str, str) -> int
-    """Find the separator's index based on the package's canonical name.
-
-    `egg_info` must be an egg info string for the given package, and
-    `canonical_name` must be the package's canonical name.
-
-    This function is needed since the canonicalized name does not necessarily
-    have the same length as the egg info's name part. An example::
-
-    >>> egg_info = 'foo__bar-1.0'
-    >>> canonical_name = 'foo-bar'
-    >>> _find_name_version_sep(egg_info, canonical_name)
-    8
-    """
-    # Project name and version must be separated by one single dash. Find all
-    # occurrences of dashes; if the string in front of it matches the canonical
-    # name, this is the one separating the name and version parts.
-    for i, c in enumerate(egg_info):
-        if c != "-":
-            continue
-        if canonicalize_name(egg_info[:i]) == canonical_name:
-            return i
-    raise ValueError("{} does not match {}".format(egg_info, canonical_name))
-
-
-def _egg_info_matches(egg_info, canonical_name):
-    # type: (str, str) -> Optional[str]
-    """Pull the version part out of a string.
-
-    :param egg_info: The string to parse. E.g. foo-2.1
-    :param canonical_name: The canonicalized name of the package this
-        belongs to.
-    """
-    try:
-        version_start = _find_name_version_sep(egg_info, canonical_name) + 1
-    except ValueError:
-        return None
-    version = egg_info[version_start:]
-    if not version:
-        return None
-    return version
-
-
-def _determine_base_url(document, page_url):
-    """Determine the HTML document's base URL.
-
-    This looks for a ``<base>`` tag in the HTML document. If present, its href
-    attribute denotes the base URL of anchor tags in the document. If there is
-    no such tag (or if it does not have a valid href attribute), the HTML
-    file's URL is used as the base URL.
-
-    :param document: An HTML document representation. The current
-        implementation expects the result of ``html5lib.parse()``.
-    :param page_url: The URL of the HTML document.
-    """
-    for base in document.findall(".//base"):
-        href = base.get("href")
-        if href is not None:
-            return href
-    return page_url
-
-
-def _get_encoding_from_headers(headers):
-    """Determine if we have any encoding information in our headers.
-    """
-    if headers and "Content-Type" in headers:
-        content_type, params = cgi.parse_header(headers["Content-Type"])
-        if "charset" in params:
-            return params['charset']
-    return None
-
-
-_CLEAN_LINK_RE = re.compile(r'[^a-z0-9$&+,/:;=?@.#%_\\|-]', re.I)
-
-
-def _clean_link(url):
-    # type: (str) -> str
-    """Makes sure a link is fully encoded.  That is, if a ' ' shows up in
-    the link, it will be rewritten to %20 (while not over-quoting
-    % or other characters)."""
-    return _CLEAN_LINK_RE.sub(lambda match: '%%%2x' % ord(match.group(0)), url)
-
-
-class HTMLPage(object):
-    """Represents one page, along with its URL"""
-
-    def __init__(self, content, url, headers=None):
-        # type: (bytes, str, MutableMapping[str, str]) -> None
-        self.content = content
-        self.url = url
-        self.headers = headers
-
-    def __str__(self):
-        return redact_password_from_url(self.url)
-
-    def iter_links(self):
-        # type: () -> Iterable[Link]
-        """Yields all links in the page"""
-        document = html5lib.parse(
-            self.content,
-            transport_encoding=_get_encoding_from_headers(self.headers),
-            namespaceHTMLElements=False,
-        )
-        base_url = _determine_base_url(document, self.url)
-        for anchor in document.findall(".//a"):
-            if anchor.get("href"):
-                href = anchor.get("href")
-                url = _clean_link(urllib_parse.urljoin(base_url, href))
-                pyrequire = anchor.get('data-requires-python')
-                pyrequire = unescape(pyrequire) if pyrequire else None
-                yield Link(url, self.url, requires_python=pyrequire)
-
-
-Search = namedtuple('Search', 'supplied canonical formats')
-"""Capture key aspects of a search.
-
-:attribute supplied: The user supplied package.
-:attribute canonical: The canonical package name.
-:attribute formats: The formats allowed for this package. Should be a set
-    with 'binary' or 'source' or both in it.
-"""

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/locations.py

@@ -1,211 +0,0 @@
-"""Locations where we look for configs, install stuff, etc"""
-from __future__ import absolute_import
-
-import os
-import os.path
-import platform
-import site
-import sys
-import sysconfig
-from distutils import sysconfig as distutils_sysconfig
-from distutils.command.install import SCHEME_KEYS  # type: ignore
-
-from pip._internal.utils import appdirs
-from pip._internal.utils.compat import WINDOWS, expanduser
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Any, Union, Dict, List, Optional  # noqa: F401
-
-
-# Application Directories
-USER_CACHE_DIR = appdirs.user_cache_dir("pip")
-
-
-DELETE_MARKER_MESSAGE = '''\
-This file is placed here by pip to indicate the source was put
-here by pip.
-
-Once this package is successfully installed this source code will be
-deleted (unless you remove this file).
-'''
-PIP_DELETE_MARKER_FILENAME = 'pip-delete-this-directory.txt'
-
-
-def write_delete_marker_file(directory):
-    # type: (str) -> None
-    """
-    Write the pip delete marker file into this directory.
-    """
-    filepath = os.path.join(directory, PIP_DELETE_MARKER_FILENAME)
-    with open(filepath, 'w') as marker_fp:
-        marker_fp.write(DELETE_MARKER_MESSAGE)
-
-
-def running_under_virtualenv():
-    # type: () -> bool
-    """
-    Return True if we're running inside a virtualenv, False otherwise.
-
-    """
-    if hasattr(sys, 'real_prefix'):
-        return True
-    elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
-        return True
-
-    return False
-
-
-def virtualenv_no_global():
-    # type: () -> bool
-    """
-    Return True if in a venv and no system site packages.
-    """
-    # this mirrors the logic in virtualenv.py for locating the
-    # no-global-site-packages.txt file
-    site_mod_dir = os.path.dirname(os.path.abspath(site.__file__))
-    no_global_file = os.path.join(site_mod_dir, 'no-global-site-packages.txt')
-    if running_under_virtualenv() and os.path.isfile(no_global_file):
-        return True
-    else:
-        return False
-
-
-if running_under_virtualenv():
-    src_prefix = os.path.join(sys.prefix, 'src')
-else:
-    # FIXME: keep src in cwd for now (it is not a temporary folder)
-    try:
-        src_prefix = os.path.join(os.getcwd(), 'src')
-    except OSError:
-        # In case the current working directory has been renamed or deleted
-        sys.exit(
-            "The folder you are executing pip from can no longer be found."
-        )
-
-# under macOS + virtualenv sys.prefix is not properly resolved
-# it is something like /path/to/python/bin/..
-# Note: using realpath due to tmp dirs on OSX being symlinks
-src_prefix = os.path.abspath(src_prefix)
-
-# FIXME doesn't account for venv linked to global site-packages
-
-site_packages = sysconfig.get_path("purelib")  # type: Optional[str]
-
-# This is because of a bug in PyPy's sysconfig module, see
-# https://bitbucket.org/pypy/pypy/issues/2506/sysconfig-returns-incorrect-paths
-# for more information.
-if platform.python_implementation().lower() == "pypy":
-    site_packages = distutils_sysconfig.get_python_lib()
-try:
-    # Use getusersitepackages if this is present, as it ensures that the
-    # value is initialised properly.
-    user_site = site.getusersitepackages()
-except AttributeError:
-    user_site = site.USER_SITE
-user_dir = expanduser('~')
-if WINDOWS:
-    bin_py = os.path.join(sys.prefix, 'Scripts')
-    bin_user = os.path.join(user_site, 'Scripts')
-    # buildout uses 'bin' on Windows too?
-    if not os.path.exists(bin_py):
-        bin_py = os.path.join(sys.prefix, 'bin')
-        bin_user = os.path.join(user_site, 'bin')
-
-    config_basename = 'pip.ini'
-
-    legacy_storage_dir = os.path.join(user_dir, 'pip')
-    legacy_config_file = os.path.join(
-        legacy_storage_dir,
-        config_basename,
-    )
-else:
-    bin_py = os.path.join(sys.prefix, 'bin')
-    bin_user = os.path.join(user_site, 'bin')
-
-    config_basename = 'pip.conf'
-
-    legacy_storage_dir = os.path.join(user_dir, '.pip')
-    legacy_config_file = os.path.join(
-        legacy_storage_dir,
-        config_basename,
-    )
-    # Forcing to use /usr/local/bin for standard macOS framework installs
-    # Also log to ~/Library/Logs/ for use with the Console.app log viewer
-    if sys.platform[:6] == 'darwin' and sys.prefix[:16] == '/System/Library/':
-        bin_py = '/usr/local/bin'
-
-site_config_files = [
-    os.path.join(path, config_basename)
-    for path in appdirs.site_config_dirs('pip')
-]
-
-venv_config_file = os.path.join(sys.prefix, config_basename)
-new_config_file = os.path.join(appdirs.user_config_dir("pip"), config_basename)
-
-
-def distutils_scheme(dist_name, user=False, home=None, root=None,
-                     isolated=False, prefix=None):
-    # type:(str, bool, str, str, bool, str) -> dict
-    """
-    Return a distutils install scheme
-    """
-    from distutils.dist import Distribution
-
-    scheme = {}
-
-    if isolated:
-        extra_dist_args = {"script_args": ["--no-user-cfg"]}
-    else:
-        extra_dist_args = {}
-    dist_args = {'name': dist_name}  # type: Dict[str, Union[str, List[str]]]
-    dist_args.update(extra_dist_args)
-
-    d = Distribution(dist_args)
-    # Ignoring, typeshed issue reported python/typeshed/issues/2567
-    d.parse_config_files()
-    # NOTE: Ignoring type since mypy can't find attributes on 'Command'
-    i = d.get_command_obj('install', create=True)  # type: Any
-    assert i is not None
-    # NOTE: setting user or home has the side-effect of creating the home dir
-    # or user base for installations during finalize_options()
-    # ideally, we'd prefer a scheme class that has no side-effects.
-    assert not (user and prefix), "user={} prefix={}".format(user, prefix)
-    i.user = user or i.user
-    if user:
-        i.prefix = ""
-    i.prefix = prefix or i.prefix
-    i.home = home or i.home
-    i.root = root or i.root
-    i.finalize_options()
-    for key in SCHEME_KEYS:
-        scheme[key] = getattr(i, 'install_' + key)
-
-    # install_lib specified in setup.cfg should install *everything*
-    # into there (i.e. it takes precedence over both purelib and
-    # platlib).  Note, i.install_lib is *always* set after
-    # finalize_options(); we only want to override here if the user
-    # has explicitly requested it hence going back to the config
-
-    # Ignoring, typeshed issue reported python/typeshed/issues/2567
-    if 'install_lib' in d.get_option_dict('install'):  # type: ignore
-        scheme.update(dict(purelib=i.install_lib, platlib=i.install_lib))
-
-    if running_under_virtualenv():
-        scheme['headers'] = os.path.join(
-            sys.prefix,
-            'include',
-            'site',
-            'python' + sys.version[:3],
-            dist_name,
-        )
-
-        if root is not None:
-            path_no_drive = os.path.splitdrive(
-                os.path.abspath(scheme["headers"]))[1]
-            scheme["headers"] = os.path.join(
-                root,
-                path_no_drive[1:],
-            )
-
-    return scheme

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/models/__init__.py

@@ -1,2 +0,0 @@
-"""A package that contains models that represent entities.
-"""

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/models/candidate.py

@@ -1,31 +0,0 @@
-from pip._vendor.packaging.version import parse as parse_version
-
-from pip._internal.utils.models import KeyBasedCompareMixin
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from pip._vendor.packaging.version import _BaseVersion  # noqa: F401
-    from pip._internal.models.link import Link  # noqa: F401
-    from typing import Any, Union  # noqa: F401
-
-
-class InstallationCandidate(KeyBasedCompareMixin):
-    """Represents a potential "candidate" for installation.
-    """
-
-    def __init__(self, project, version, location):
-        # type: (Any, str, Link) -> None
-        self.project = project
-        self.version = parse_version(version)  # type: _BaseVersion
-        self.location = location
-
-        super(InstallationCandidate, self).__init__(
-            key=(self.project, self.version, self.location),
-            defining_class=InstallationCandidate
-        )
-
-    def __repr__(self):
-        # type: () -> str
-        return "<InstallationCandidate({!r}, {!r}, {!r})>".format(
-            self.project, self.version, self.location,
-        )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/models/format_control.py

@@ -1,73 +0,0 @@
-from pip._vendor.packaging.utils import canonicalize_name
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, Set, FrozenSet  # noqa: F401
-
-
-class FormatControl(object):
-    """Helper for managing formats from which a package can be installed.
-    """
-
-    def __init__(self, no_binary=None, only_binary=None):
-        # type: (Optional[Set], Optional[Set]) -> None
-        if no_binary is None:
-            no_binary = set()
-        if only_binary is None:
-            only_binary = set()
-
-        self.no_binary = no_binary
-        self.only_binary = only_binary
-
-    def __eq__(self, other):
-        return self.__dict__ == other.__dict__
-
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
-    def __repr__(self):
-        return "{}({}, {})".format(
-            self.__class__.__name__,
-            self.no_binary,
-            self.only_binary
-        )
-
-    @staticmethod
-    def handle_mutual_excludes(value, target, other):
-        # type: (str, Optional[Set], Optional[Set]) -> None
-        new = value.split(',')
-        while ':all:' in new:
-            other.clear()
-            target.clear()
-            target.add(':all:')
-            del new[:new.index(':all:') + 1]
-            # Without a none, we want to discard everything as :all: covers it
-            if ':none:' not in new:
-                return
-        for name in new:
-            if name == ':none:':
-                target.clear()
-                continue
-            name = canonicalize_name(name)
-            other.discard(name)
-            target.add(name)
-
-    def get_allowed_formats(self, canonical_name):
-        # type: (str) -> FrozenSet
-        result = {"binary", "source"}
-        if canonical_name in self.only_binary:
-            result.discard('source')
-        elif canonical_name in self.no_binary:
-            result.discard('binary')
-        elif ':all:' in self.only_binary:
-            result.discard('source')
-        elif ':all:' in self.no_binary:
-            result.discard('binary')
-        return frozenset(result)
-
-    def disallow_binaries(self):
-        # type: () -> None
-        self.handle_mutual_excludes(
-            ':all:', self.no_binary, self.only_binary,
-        )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/models/index.py

@@ -1,31 +0,0 @@
-from pip._vendor.six.moves.urllib import parse as urllib_parse
-
-
-class PackageIndex(object):
-    """Represents a Package Index and provides easier access to endpoints
-    """
-
-    def __init__(self, url, file_storage_domain):
-        # type: (str, str) -> None
-        super(PackageIndex, self).__init__()
-        self.url = url
-        self.netloc = urllib_parse.urlsplit(url).netloc
-        self.simple_url = self._url_for_path('simple')
-        self.pypi_url = self._url_for_path('pypi')
-
-        # This is part of a temporary hack used to block installs of PyPI
-        # packages which depend on external urls only necessary until PyPI can
-        # block such packages themselves
-        self.file_storage_domain = file_storage_domain
-
-    def _url_for_path(self, path):
-        # type: (str) -> str
-        return urllib_parse.urljoin(self.url, path)
-
-
-PyPI = PackageIndex(
-    'https://pypi.org/', file_storage_domain='files.pythonhosted.org'
-)
-TestPyPI = PackageIndex(
-    'https://test.pypi.org/', file_storage_domain='test-files.pythonhosted.org'
-)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/models/link.py

@@ -1,163 +0,0 @@
-import posixpath
-import re
-
-from pip._vendor.six.moves.urllib import parse as urllib_parse
-
-from pip._internal.download import path_to_url
-from pip._internal.utils.misc import (
-    WHEEL_EXTENSION, redact_password_from_url, splitext,
-)
-from pip._internal.utils.models import KeyBasedCompareMixin
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, Tuple, Union, Text  # noqa: F401
-    from pip._internal.index import HTMLPage  # noqa: F401
-
-
-class Link(KeyBasedCompareMixin):
-    """Represents a parsed link from a Package Index's simple URL
-    """
-
-    def __init__(self, url, comes_from=None, requires_python=None):
-        # type: (str, Optional[Union[str, HTMLPage]], Optional[str]) -> None
-        """
-        url:
-            url of the resource pointed to (href of the link)
-        comes_from:
-            instance of HTMLPage where the link was found, or string.
-        requires_python:
-            String containing the `Requires-Python` metadata field, specified
-            in PEP 345. This may be specified by a data-requires-python
-            attribute in the HTML link tag, as described in PEP 503.
-        """
-
-        # url can be a UNC windows share
-        if url.startswith('\\\\'):
-            url = path_to_url(url)
-
-        self.url = url
-        self.comes_from = comes_from
-        self.requires_python = requires_python if requires_python else None
-
-        super(Link, self).__init__(
-            key=(self.url),
-            defining_class=Link
-        )
-
-    def __str__(self):
-        if self.requires_python:
-            rp = ' (requires-python:%s)' % self.requires_python
-        else:
-            rp = ''
-        if self.comes_from:
-            return '%s (from %s)%s' % (redact_password_from_url(self.url),
-                                       self.comes_from, rp)
-        else:
-            return redact_password_from_url(str(self.url))
-
-    def __repr__(self):
-        return '<Link %s>' % self
-
-    @property
-    def filename(self):
-        # type: () -> str
-        _, netloc, path, _, _ = urllib_parse.urlsplit(self.url)
-        name = posixpath.basename(path.rstrip('/')) or netloc
-        name = urllib_parse.unquote(name)
-        assert name, ('URL %r produced no filename' % self.url)
-        return name
-
-    @property
-    def scheme(self):
-        # type: () -> str
-        return urllib_parse.urlsplit(self.url)[0]
-
-    @property
-    def netloc(self):
-        # type: () -> str
-        return urllib_parse.urlsplit(self.url)[1]
-
-    @property
-    def path(self):
-        # type: () -> str
-        return urllib_parse.unquote(urllib_parse.urlsplit(self.url)[2])
-
-    def splitext(self):
-        # type: () -> Tuple[str, str]
-        return splitext(posixpath.basename(self.path.rstrip('/')))
-
-    @property
-    def ext(self):
-        # type: () -> str
-        return self.splitext()[1]
-
-    @property
-    def url_without_fragment(self):
-        # type: () -> str
-        scheme, netloc, path, query, fragment = urllib_parse.urlsplit(self.url)
-        return urllib_parse.urlunsplit((scheme, netloc, path, query, None))
-
-    _egg_fragment_re = re.compile(r'[#&]egg=([^&]*)')
-
-    @property
-    def egg_fragment(self):
-        # type: () -> Optional[str]
-        match = self._egg_fragment_re.search(self.url)
-        if not match:
-            return None
-        return match.group(1)
-
-    _subdirectory_fragment_re = re.compile(r'[#&]subdirectory=([^&]*)')
-
-    @property
-    def subdirectory_fragment(self):
-        # type: () -> Optional[str]
-        match = self._subdirectory_fragment_re.search(self.url)
-        if not match:
-            return None
-        return match.group(1)
-
-    _hash_re = re.compile(
-        r'(sha1|sha224|sha384|sha256|sha512|md5)=([a-f0-9]+)'
-    )
-
-    @property
-    def hash(self):
-        # type: () -> Optional[str]
-        match = self._hash_re.search(self.url)
-        if match:
-            return match.group(2)
-        return None
-
-    @property
-    def hash_name(self):
-        # type: () -> Optional[str]
-        match = self._hash_re.search(self.url)
-        if match:
-            return match.group(1)
-        return None
-
-    @property
-    def show_url(self):
-        # type: () -> Optional[str]
-        return posixpath.basename(self.url.split('#', 1)[0].split('?', 1)[0])
-
-    @property
-    def is_wheel(self):
-        # type: () -> bool
-        return self.ext == WHEEL_EXTENSION
-
-    @property
-    def is_artifact(self):
-        # type: () -> bool
-        """
-        Determines if this points to an actual artifact (e.g. a tarball) or if
-        it points to an "abstract" thing like a path or a VCS location.
-        """
-        from pip._internal.vcs import vcs
-
-        if self.scheme in vcs.all_schemes:
-            return False
-
-        return True

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/operations/check.py

@@ -1,155 +0,0 @@
-"""Validation of dependencies of packages
-"""
-
-import logging
-from collections import namedtuple
-
-from pip._vendor.packaging.utils import canonicalize_name
-from pip._vendor.pkg_resources import RequirementParseError
-
-from pip._internal.operations.prepare import make_abstract_dist
-from pip._internal.utils.misc import get_installed_distributions
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-logger = logging.getLogger(__name__)
-
-if MYPY_CHECK_RUNNING:
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-    from typing import (  # noqa: F401
-        Any, Callable, Dict, Optional, Set, Tuple, List
-    )
-
-    # Shorthands
-    PackageSet = Dict[str, 'PackageDetails']
-    Missing = Tuple[str, Any]
-    Conflicting = Tuple[str, str, Any]
-
-    MissingDict = Dict[str, List[Missing]]
-    ConflictingDict = Dict[str, List[Conflicting]]
-    CheckResult = Tuple[MissingDict, ConflictingDict]
-
-PackageDetails = namedtuple('PackageDetails', ['version', 'requires'])
-
-
-def create_package_set_from_installed(**kwargs):
-    # type: (**Any) -> Tuple[PackageSet, bool]
-    """Converts a list of distributions into a PackageSet.
-    """
-    # Default to using all packages installed on the system
-    if kwargs == {}:
-        kwargs = {"local_only": False, "skip": ()}
-
-    package_set = {}
-    problems = False
-    for dist in get_installed_distributions(**kwargs):
-        name = canonicalize_name(dist.project_name)
-        try:
-            package_set[name] = PackageDetails(dist.version, dist.requires())
-        except RequirementParseError as e:
-            # Don't crash on broken metadata
-            logging.warning("Error parsing requirements for %s: %s", name, e)
-            problems = True
-    return package_set, problems
-
-
-def check_package_set(package_set, should_ignore=None):
-    # type: (PackageSet, Optional[Callable[[str], bool]]) -> CheckResult
-    """Check if a package set is consistent
-
-    If should_ignore is passed, it should be a callable that takes a
-    package name and returns a boolean.
-    """
-    if should_ignore is None:
-        def should_ignore(name):
-            return False
-
-    missing = dict()
-    conflicting = dict()
-
-    for package_name in package_set:
-        # Info about dependencies of package_name
-        missing_deps = set()  # type: Set[Missing]
-        conflicting_deps = set()  # type: Set[Conflicting]
-
-        if should_ignore(package_name):
-            continue
-
-        for req in package_set[package_name].requires:
-            name = canonicalize_name(req.project_name)  # type: str
-
-            # Check if it's missing
-            if name not in package_set:
-                missed = True
-                if req.marker is not None:
-                    missed = req.marker.evaluate()
-                if missed:
-                    missing_deps.add((name, req))
-                continue
-
-            # Check if there's a conflict
-            version = package_set[name].version  # type: str
-            if not req.specifier.contains(version, prereleases=True):
-                conflicting_deps.add((name, version, req))
-
-        if missing_deps:
-            missing[package_name] = sorted(missing_deps, key=str)
-        if conflicting_deps:
-            conflicting[package_name] = sorted(conflicting_deps, key=str)
-
-    return missing, conflicting
-
-
-def check_install_conflicts(to_install):
-    # type: (List[InstallRequirement]) -> Tuple[PackageSet, CheckResult]
-    """For checking if the dependency graph would be consistent after \
-    installing given requirements
-    """
-    # Start from the current state
-    package_set, _ = create_package_set_from_installed()
-    # Install packages
-    would_be_installed = _simulate_installation_of(to_install, package_set)
-
-    # Only warn about directly-dependent packages; create a whitelist of them
-    whitelist = _create_whitelist(would_be_installed, package_set)
-
-    return (
-        package_set,
-        check_package_set(
-            package_set, should_ignore=lambda name: name not in whitelist
-        )
-    )
-
-
-def _simulate_installation_of(to_install, package_set):
-    # type: (List[InstallRequirement], PackageSet) -> Set[str]
-    """Computes the version of packages after installing to_install.
-    """
-
-    # Keep track of packages that were installed
-    installed = set()
-
-    # Modify it as installing requirement_set would (assuming no errors)
-    for inst_req in to_install:
-        dist = make_abstract_dist(inst_req).dist()
-        name = canonicalize_name(dist.key)
-        package_set[name] = PackageDetails(dist.version, dist.requires())
-
-        installed.add(name)
-
-    return installed
-
-
-def _create_whitelist(would_be_installed, package_set):
-    # type: (Set[str], PackageSet) -> Set[str]
-    packages_affected = set(would_be_installed)
-
-    for package_name in package_set:
-        if package_name in packages_affected:
-            continue
-
-        for req in package_set[package_name].requires:
-            if canonicalize_name(req.name) in packages_affected:
-                packages_affected.add(package_name)
-                break
-
-    return packages_affected

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/operations/freeze.py

@@ -1,247 +0,0 @@
-from __future__ import absolute_import
-
-import collections
-import logging
-import os
-import re
-
-from pip._vendor import six
-from pip._vendor.packaging.utils import canonicalize_name
-from pip._vendor.pkg_resources import RequirementParseError
-
-from pip._internal.exceptions import BadCommand, InstallationError
-from pip._internal.req.constructors import (
-    install_req_from_editable, install_req_from_line,
-)
-from pip._internal.req.req_file import COMMENT_RE
-from pip._internal.utils.misc import (
-    dist_is_editable, get_installed_distributions,
-)
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Iterator, Optional, List, Container, Set, Dict, Tuple, Iterable, Union
-    )
-    from pip._internal.cache import WheelCache  # noqa: F401
-    from pip._vendor.pkg_resources import (  # noqa: F401
-        Distribution, Requirement
-    )
-
-    RequirementInfo = Tuple[Optional[Union[str, Requirement]], bool, List[str]]
-
-
-logger = logging.getLogger(__name__)
-
-
-def freeze(
-    requirement=None,  # type: Optional[List[str]]
-    find_links=None,  # type: Optional[List[str]]
-    local_only=None,  # type: Optional[bool]
-    user_only=None,  # type: Optional[bool]
-    skip_regex=None,  # type: Optional[str]
-    isolated=False,  # type: bool
-    wheel_cache=None,  # type: Optional[WheelCache]
-    exclude_editable=False,  # type: bool
-    skip=()  # type: Container[str]
-):
-    # type: (...) -> Iterator[str]
-    find_links = find_links or []
-    skip_match = None
-
-    if skip_regex:
-        skip_match = re.compile(skip_regex).search
-
-    for link in find_links:
-        yield '-f %s' % link
-    installations = {}  # type: Dict[str, FrozenRequirement]
-    for dist in get_installed_distributions(local_only=local_only,
-                                            skip=(),
-                                            user_only=user_only):
-        try:
-            req = FrozenRequirement.from_dist(dist)
-        except RequirementParseError:
-            logger.warning(
-                "Could not parse requirement: %s",
-                dist.project_name
-            )
-            continue
-        if exclude_editable and req.editable:
-            continue
-        installations[req.name] = req
-
-    if requirement:
-        # the options that don't get turned into an InstallRequirement
-        # should only be emitted once, even if the same option is in multiple
-        # requirements files, so we need to keep track of what has been emitted
-        # so that we don't emit it again if it's seen again
-        emitted_options = set()  # type: Set[str]
-        # keep track of which files a requirement is in so that we can
-        # give an accurate warning if a requirement appears multiple times.
-        req_files = collections.defaultdict(list)  # type: Dict[str, List[str]]
-        for req_file_path in requirement:
-            with open(req_file_path) as req_file:
-                for line in req_file:
-                    if (not line.strip() or
-                            line.strip().startswith('#') or
-                            (skip_match and skip_match(line)) or
-                            line.startswith((
-                                '-r', '--requirement',
-                                '-Z', '--always-unzip',
-                                '-f', '--find-links',
-                                '-i', '--index-url',
-                                '--pre',
-                                '--trusted-host',
-                                '--process-dependency-links',
-                                '--extra-index-url'))):
-                        line = line.rstrip()
-                        if line not in emitted_options:
-                            emitted_options.add(line)
-                            yield line
-                        continue
-
-                    if line.startswith('-e') or line.startswith('--editable'):
-                        if line.startswith('-e'):
-                            line = line[2:].strip()
-                        else:
-                            line = line[len('--editable'):].strip().lstrip('=')
-                        line_req = install_req_from_editable(
-                            line,
-                            isolated=isolated,
-                            wheel_cache=wheel_cache,
-                        )
-                    else:
-                        line_req = install_req_from_line(
-                            COMMENT_RE.sub('', line).strip(),
-                            isolated=isolated,
-                            wheel_cache=wheel_cache,
-                        )
-
-                    if not line_req.name:
-                        logger.info(
-                            "Skipping line in requirement file [%s] because "
-                            "it's not clear what it would install: %s",
-                            req_file_path, line.strip(),
-                        )
-                        logger.info(
-                            "  (add #egg=PackageName to the URL to avoid"
-                            " this warning)"
-                        )
-                    elif line_req.name not in installations:
-                        # either it's not installed, or it is installed
-                        # but has been processed already
-                        if not req_files[line_req.name]:
-                            logger.warning(
-                                "Requirement file [%s] contains %s, but "
-                                "package %r is not installed",
-                                req_file_path,
-                                COMMENT_RE.sub('', line).strip(), line_req.name
-                            )
-                        else:
-                            req_files[line_req.name].append(req_file_path)
-                    else:
-                        yield str(installations[line_req.name]).rstrip()
-                        del installations[line_req.name]
-                        req_files[line_req.name].append(req_file_path)
-
-        # Warn about requirements that were included multiple times (in a
-        # single requirements file or in different requirements files).
-        for name, files in six.iteritems(req_files):
-            if len(files) > 1:
-                logger.warning("Requirement %s included multiple times [%s]",
-                               name, ', '.join(sorted(set(files))))
-
-        yield(
-            '## The following requirements were added by '
-            'pip freeze:'
-        )
-    for installation in sorted(
-            installations.values(), key=lambda x: x.name.lower()):
-        if canonicalize_name(installation.name) not in skip:
-            yield str(installation).rstrip()
-
-
-def get_requirement_info(dist):
-    # type: (Distribution) -> RequirementInfo
-    """
-    Compute and return values (req, editable, comments) for use in
-    FrozenRequirement.from_dist().
-    """
-    if not dist_is_editable(dist):
-        return (None, False, [])
-
-    location = os.path.normcase(os.path.abspath(dist.location))
-
-    from pip._internal.vcs import vcs, RemoteNotFoundError
-    vc_type = vcs.get_backend_type(location)
-
-    if not vc_type:
-        req = dist.as_requirement()
-        logger.debug(
-            'No VCS found for editable requirement {!r} in: {!r}', req,
-            location,
-        )
-        comments = [
-            '# Editable install with no version control ({})'.format(req)
-        ]
-        return (location, True, comments)
-
-    try:
-        req = vc_type.get_src_requirement(location, dist.project_name)
-    except RemoteNotFoundError:
-        req = dist.as_requirement()
-        comments = [
-            '# Editable {} install with no remote ({})'.format(
-                vc_type.__name__, req,
-            )
-        ]
-        return (location, True, comments)
-
-    except BadCommand:
-        logger.warning(
-            'cannot determine version of editable source in %s '
-            '(%s command not found in path)',
-            location,
-            vc_type.name,
-        )
-        return (None, True, [])
-
-    except InstallationError as exc:
-        logger.warning(
-            "Error when trying to get requirement for VCS system %s, "
-            "falling back to uneditable format", exc
-        )
-    else:
-        if req is not None:
-            return (req, True, [])
-
-    logger.warning(
-        'Could not determine repository location of %s', location
-    )
-    comments = ['## !! Could not determine repository location']
-
-    return (None, False, comments)
-
-
-class FrozenRequirement(object):
-    def __init__(self, name, req, editable, comments=()):
-        # type: (str, Union[str, Requirement], bool, Iterable[str]) -> None
-        self.name = name
-        self.req = req
-        self.editable = editable
-        self.comments = comments
-
-    @classmethod
-    def from_dist(cls, dist):
-        # type: (Distribution) -> FrozenRequirement
-        req, editable, comments = get_requirement_info(dist)
-        if req is None:
-            req = dist.as_requirement()
-
-        return cls(dist.project_name, req, editable, comments=comments)
-
-    def __str__(self):
-        req = self.req
-        if self.editable:
-            req = '-e %s' % req
-        return '\n'.join(list(self.comments) + [str(req)]) + '\n'

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/operations/prepare.py

@@ -1,413 +0,0 @@
-"""Prepares a distribution for installation
-"""
-
-import logging
-import os
-
-from pip._vendor import pkg_resources, requests
-
-from pip._internal.build_env import BuildEnvironment
-from pip._internal.download import (
-    is_dir_url, is_file_url, is_vcs_url, unpack_url, url_to_path,
-)
-from pip._internal.exceptions import (
-    DirectoryUrlHashUnsupported, HashUnpinned, InstallationError,
-    PreviousBuildDirError, VcsHashUnsupported,
-)
-from pip._internal.utils.compat import expanduser
-from pip._internal.utils.hashes import MissingHashes
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import display_path, normalize_path
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.vcs import vcs
-
-if MYPY_CHECK_RUNNING:
-    from typing import Any, Optional  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-    from pip._internal.index import PackageFinder  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-    from pip._internal.req.req_tracker import RequirementTracker  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-def make_abstract_dist(req):
-    # type: (InstallRequirement) -> DistAbstraction
-    """Factory to make an abstract dist object.
-
-    Preconditions: Either an editable req with a source_dir, or satisfied_by or
-    a wheel link, or a non-editable req with a source_dir.
-
-    :return: A concrete DistAbstraction.
-    """
-    if req.editable:
-        return IsSDist(req)
-    elif req.link and req.link.is_wheel:
-        return IsWheel(req)
-    else:
-        return IsSDist(req)
-
-
-class DistAbstraction(object):
-    """Abstracts out the wheel vs non-wheel Resolver.resolve() logic.
-
-    The requirements for anything installable are as follows:
-     - we must be able to determine the requirement name
-       (or we can't correctly handle the non-upgrade case).
-     - we must be able to generate a list of run-time dependencies
-       without installing any additional packages (or we would
-       have to either burn time by doing temporary isolated installs
-       or alternatively violate pips 'don't start installing unless
-       all requirements are available' rule - neither of which are
-       desirable).
-     - for packages with setup requirements, we must also be able
-       to determine their requirements without installing additional
-       packages (for the same reason as run-time dependencies)
-     - we must be able to create a Distribution object exposing the
-       above metadata.
-    """
-
-    def __init__(self, req):
-        # type: (InstallRequirement) -> None
-        self.req = req  # type: InstallRequirement
-
-    def dist(self):
-        # type: () -> Any
-        """Return a setuptools Dist object."""
-        raise NotImplementedError
-
-    def prep_for_dist(self, finder, build_isolation):
-        # type: (PackageFinder, bool) -> Any
-        """Ensure that we can get a Dist for this requirement."""
-        raise NotImplementedError
-
-
-class IsWheel(DistAbstraction):
-
-    def dist(self):
-        # type: () -> pkg_resources.Distribution
-        return list(pkg_resources.find_distributions(
-            self.req.source_dir))[0]
-
-    def prep_for_dist(self, finder, build_isolation):
-        # type: (PackageFinder, bool) -> Any
-        # FIXME:https://github.com/pypa/pip/issues/1112
-        pass
-
-
-class IsSDist(DistAbstraction):
-
-    def dist(self):
-        return self.req.get_dist()
-
-    def prep_for_dist(self, finder, build_isolation):
-        # type: (PackageFinder, bool) -> None
-        # Prepare for building. We need to:
-        #   1. Load pyproject.toml (if it exists)
-        #   2. Set up the build environment
-
-        self.req.load_pyproject_toml()
-        should_isolate = self.req.use_pep517 and build_isolation
-
-        def _raise_conflicts(conflicting_with, conflicting_reqs):
-            raise InstallationError(
-                "Some build dependencies for %s conflict with %s: %s." % (
-                    self.req, conflicting_with, ', '.join(
-                        '%s is incompatible with %s' % (installed, wanted)
-                        for installed, wanted in sorted(conflicting))))
-
-        if should_isolate:
-            # Isolate in a BuildEnvironment and install the build-time
-            # requirements.
-            self.req.build_env = BuildEnvironment()
-            self.req.build_env.install_requirements(
-                finder, self.req.pyproject_requires, 'overlay',
-                "Installing build dependencies"
-            )
-            conflicting, missing = self.req.build_env.check_requirements(
-                self.req.requirements_to_check
-            )
-            if conflicting:
-                _raise_conflicts("PEP 517/518 supported requirements",
-                                 conflicting)
-            if missing:
-                logger.warning(
-                    "Missing build requirements in pyproject.toml for %s.",
-                    self.req,
-                )
-                logger.warning(
-                    "The project does not specify a build backend, and "
-                    "pip cannot fall back to setuptools without %s.",
-                    " and ".join(map(repr, sorted(missing)))
-                )
-            # Install any extra build dependencies that the backend requests.
-            # This must be done in a second pass, as the pyproject.toml
-            # dependencies must be installed before we can call the backend.
-            with self.req.build_env:
-                # We need to have the env active when calling the hook.
-                self.req.spin_message = "Getting requirements to build wheel"
-                reqs = self.req.pep517_backend.get_requires_for_build_wheel()
-            conflicting, missing = self.req.build_env.check_requirements(reqs)
-            if conflicting:
-                _raise_conflicts("the backend dependencies", conflicting)
-            self.req.build_env.install_requirements(
-                finder, missing, 'normal',
-                "Installing backend dependencies"
-            )
-
-        self.req.prepare_metadata()
-        self.req.assert_source_matches_version()
-
-
-class Installed(DistAbstraction):
-
-    def dist(self):
-        # type: () -> pkg_resources.Distribution
-        return self.req.satisfied_by
-
-    def prep_for_dist(self, finder, build_isolation):
-        # type: (PackageFinder, bool) -> Any
-        pass
-
-
-class RequirementPreparer(object):
-    """Prepares a Requirement
-    """
-
-    def __init__(
-        self,
-        build_dir,  # type: str
-        download_dir,  # type: Optional[str]
-        src_dir,  # type: str
-        wheel_download_dir,  # type: Optional[str]
-        progress_bar,  # type: str
-        build_isolation,  # type: bool
-        req_tracker  # type: RequirementTracker
-    ):
-        # type: (...) -> None
-        super(RequirementPreparer, self).__init__()
-
-        self.src_dir = src_dir
-        self.build_dir = build_dir
-        self.req_tracker = req_tracker
-
-        # Where still packed archives should be written to. If None, they are
-        # not saved, and are deleted immediately after unpacking.
-        self.download_dir = download_dir
-
-        # Where still-packed .whl files should be written to. If None, they are
-        # written to the download_dir parameter. Separate to download_dir to
-        # permit only keeping wheel archives for pip wheel.
-        if wheel_download_dir:
-            wheel_download_dir = normalize_path(wheel_download_dir)
-        self.wheel_download_dir = wheel_download_dir
-
-        # NOTE
-        # download_dir and wheel_download_dir overlap semantically and may
-        # be combined if we're willing to have non-wheel archives present in
-        # the wheelhouse output by 'pip wheel'.
-
-        self.progress_bar = progress_bar
-
-        # Is build isolation allowed?
-        self.build_isolation = build_isolation
-
-    @property
-    def _download_should_save(self):
-        # type: () -> bool
-        # TODO: Modify to reduce indentation needed
-        if self.download_dir:
-            self.download_dir = expanduser(self.download_dir)
-            if os.path.exists(self.download_dir):
-                return True
-            else:
-                logger.critical('Could not find download directory')
-                raise InstallationError(
-                    "Could not find or access download directory '%s'"
-                    % display_path(self.download_dir))
-        return False
-
-    def prepare_linked_requirement(
-        self,
-        req,  # type: InstallRequirement
-        session,  # type: PipSession
-        finder,  # type: PackageFinder
-        upgrade_allowed,  # type: bool
-        require_hashes  # type: bool
-    ):
-        # type: (...) -> DistAbstraction
-        """Prepare a requirement that would be obtained from req.link
-        """
-        # TODO: Breakup into smaller functions
-        if req.link and req.link.scheme == 'file':
-            path = url_to_path(req.link.url)
-            logger.info('Processing %s', display_path(path))
-        else:
-            logger.info('Collecting %s', req)
-
-        with indent_log():
-            # @@ if filesystem packages are not marked
-            # editable in a req, a non deterministic error
-            # occurs when the script attempts to unpack the
-            # build directory
-            req.ensure_has_source_dir(self.build_dir)
-            # If a checkout exists, it's unwise to keep going.  version
-            # inconsistencies are logged later, but do not fail the
-            # installation.
-            # FIXME: this won't upgrade when there's an existing
-            # package unpacked in `req.source_dir`
-            # package unpacked in `req.source_dir`
-            if os.path.exists(os.path.join(req.source_dir, 'setup.py')):
-                raise PreviousBuildDirError(
-                    "pip can't proceed with requirements '%s' due to a"
-                    " pre-existing build directory (%s). This is "
-                    "likely due to a previous installation that failed"
-                    ". pip is being responsible and not assuming it "
-                    "can delete this. Please delete it and try again."
-                    % (req, req.source_dir)
-                )
-            req.populate_link(finder, upgrade_allowed, require_hashes)
-
-            # We can't hit this spot and have populate_link return None.
-            # req.satisfied_by is None here (because we're
-            # guarded) and upgrade has no impact except when satisfied_by
-            # is not None.
-            # Then inside find_requirement existing_applicable -> False
-            # If no new versions are found, DistributionNotFound is raised,
-            # otherwise a result is guaranteed.
-            assert req.link
-            link = req.link
-
-            # Now that we have the real link, we can tell what kind of
-            # requirements we have and raise some more informative errors
-            # than otherwise. (For example, we can raise VcsHashUnsupported
-            # for a VCS URL rather than HashMissing.)
-            if require_hashes:
-                # We could check these first 2 conditions inside
-                # unpack_url and save repetition of conditions, but then
-                # we would report less-useful error messages for
-                # unhashable requirements, complaining that there's no
-                # hash provided.
-                if is_vcs_url(link):
-                    raise VcsHashUnsupported()
-                elif is_file_url(link) and is_dir_url(link):
-                    raise DirectoryUrlHashUnsupported()
-                if not req.original_link and not req.is_pinned:
-                    # Unpinned packages are asking for trouble when a new
-                    # version is uploaded. This isn't a security check, but
-                    # it saves users a surprising hash mismatch in the
-                    # future.
-                    #
-                    # file:/// URLs aren't pinnable, so don't complain
-                    # about them not being pinned.
-                    raise HashUnpinned()
-
-            hashes = req.hashes(trust_internet=not require_hashes)
-            if require_hashes and not hashes:
-                # Known-good hashes are missing for this requirement, so
-                # shim it with a facade object that will provoke hash
-                # computation and then raise a HashMissing exception
-                # showing the user what the hash should be.
-                hashes = MissingHashes()
-
-            try:
-                download_dir = self.download_dir
-                # We always delete unpacked sdists after pip ran.
-                autodelete_unpacked = True
-                if req.link.is_wheel and self.wheel_download_dir:
-                    # when doing 'pip wheel` we download wheels to a
-                    # dedicated dir.
-                    download_dir = self.wheel_download_dir
-                if req.link.is_wheel:
-                    if download_dir:
-                        # When downloading, we only unpack wheels to get
-                        # metadata.
-                        autodelete_unpacked = True
-                    else:
-                        # When installing a wheel, we use the unpacked
-                        # wheel.
-                        autodelete_unpacked = False
-                unpack_url(
-                    req.link, req.source_dir,
-                    download_dir, autodelete_unpacked,
-                    session=session, hashes=hashes,
-                    progress_bar=self.progress_bar
-                )
-            except requests.HTTPError as exc:
-                logger.critical(
-                    'Could not install requirement %s because of error %s',
-                    req,
-                    exc,
-                )
-                raise InstallationError(
-                    'Could not install requirement %s because of HTTP '
-                    'error %s for URL %s' %
-                    (req, exc, req.link)
-                )
-            abstract_dist = make_abstract_dist(req)
-            with self.req_tracker.track(req):
-                abstract_dist.prep_for_dist(finder, self.build_isolation)
-            if self._download_should_save:
-                # Make a .zip of the source_dir we already created.
-                if req.link.scheme in vcs.all_schemes:
-                    req.archive(self.download_dir)
-        return abstract_dist
-
-    def prepare_editable_requirement(
-        self,
-        req,  # type: InstallRequirement
-        require_hashes,  # type: bool
-        use_user_site,  # type: bool
-        finder  # type: PackageFinder
-    ):
-        # type: (...) -> DistAbstraction
-        """Prepare an editable requirement
-        """
-        assert req.editable, "cannot prepare a non-editable req as editable"
-
-        logger.info('Obtaining %s', req)
-
-        with indent_log():
-            if require_hashes:
-                raise InstallationError(
-                    'The editable requirement %s cannot be installed when '
-                    'requiring hashes, because there is no single file to '
-                    'hash.' % req
-                )
-            req.ensure_has_source_dir(self.src_dir)
-            req.update_editable(not self._download_should_save)
-
-            abstract_dist = make_abstract_dist(req)
-            with self.req_tracker.track(req):
-                abstract_dist.prep_for_dist(finder, self.build_isolation)
-
-            if self._download_should_save:
-                req.archive(self.download_dir)
-            req.check_if_exists(use_user_site)
-
-        return abstract_dist
-
-    def prepare_installed_requirement(self, req, require_hashes, skip_reason):
-        # type: (InstallRequirement, bool, Optional[str]) -> DistAbstraction
-        """Prepare an already-installed requirement
-        """
-        assert req.satisfied_by, "req should have been satisfied but isn't"
-        assert skip_reason is not None, (
-            "did not get skip reason skipped but req.satisfied_by "
-            "is set to %r" % (req.satisfied_by,)
-        )
-        logger.info(
-            'Requirement %s: %s (%s)',
-            skip_reason, req, req.satisfied_by.version
-        )
-        with indent_log():
-            if require_hashes:
-                logger.debug(
-                    'Since it is already installed, we are trusting this '
-                    'package without checking its hash. To ensure a '
-                    'completely repeatable environment, install into an '
-                    'empty virtualenv.'
-                )
-            abstract_dist = Installed(req)
-
-        return abstract_dist

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/pep425tags.py

@@ -1,381 +0,0 @@
-"""Generate and work with PEP 425 Compatibility Tags."""
-from __future__ import absolute_import
-
-import distutils.util
-import logging
-import platform
-import re
-import sys
-import sysconfig
-import warnings
-from collections import OrderedDict
-
-import pip._internal.utils.glibc
-from pip._internal.utils.compat import get_extension_suffixes
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Tuple, Callable, List, Optional, Union, Dict
-    )
-
-    Pep425Tag = Tuple[str, str, str]
-
-logger = logging.getLogger(__name__)
-
-_osx_arch_pat = re.compile(r'(.+)_(\d+)_(\d+)_(.+)')
-
-
-def get_config_var(var):
-    # type: (str) -> Optional[str]
-    try:
-        return sysconfig.get_config_var(var)
-    except IOError as e:  # Issue #1074
-        warnings.warn("{}".format(e), RuntimeWarning)
-        return None
-
-
-def get_abbr_impl():
-    # type: () -> str
-    """Return abbreviated implementation name."""
-    if hasattr(sys, 'pypy_version_info'):
-        pyimpl = 'pp'
-    elif sys.platform.startswith('java'):
-        pyimpl = 'jy'
-    elif sys.platform == 'cli':
-        pyimpl = 'ip'
-    else:
-        pyimpl = 'cp'
-    return pyimpl
-
-
-def get_impl_ver():
-    # type: () -> str
-    """Return implementation version."""
-    impl_ver = get_config_var("py_version_nodot")
-    if not impl_ver or get_abbr_impl() == 'pp':
-        impl_ver = ''.join(map(str, get_impl_version_info()))
-    return impl_ver
-
-
-def get_impl_version_info():
-    # type: () -> Tuple[int, ...]
-    """Return sys.version_info-like tuple for use in decrementing the minor
-    version."""
-    if get_abbr_impl() == 'pp':
-        # as per https://github.com/pypa/pip/issues/2882
-        # attrs exist only on pypy
-        return (sys.version_info[0],
-                sys.pypy_version_info.major,  # type: ignore
-                sys.pypy_version_info.minor)  # type: ignore
-    else:
-        return sys.version_info[0], sys.version_info[1]
-
-
-def get_impl_tag():
-    # type: () -> str
-    """
-    Returns the Tag for this specific implementation.
-    """
-    return "{}{}".format(get_abbr_impl(), get_impl_ver())
-
-
-def get_flag(var, fallback, expected=True, warn=True):
-    # type: (str, Callable[..., bool], Union[bool, int], bool) -> bool
-    """Use a fallback method for determining SOABI flags if the needed config
-    var is unset or unavailable."""
-    val = get_config_var(var)
-    if val is None:
-        if warn:
-            logger.debug("Config variable '%s' is unset, Python ABI tag may "
-                         "be incorrect", var)
-        return fallback()
-    return val == expected
-
-
-def get_abi_tag():
-    # type: () -> Optional[str]
-    """Return the ABI tag based on SOABI (if available) or emulate SOABI
-    (CPython 2, PyPy)."""
-    soabi = get_config_var('SOABI')
-    impl = get_abbr_impl()
-    if not soabi and impl in {'cp', 'pp'} and hasattr(sys, 'maxunicode'):
-        d = ''
-        m = ''
-        u = ''
-        if get_flag('Py_DEBUG',
-                    lambda: hasattr(sys, 'gettotalrefcount'),
-                    warn=(impl == 'cp')):
-            d = 'd'
-        if get_flag('WITH_PYMALLOC',
-                    lambda: impl == 'cp',
-                    warn=(impl == 'cp')):
-            m = 'm'
-        if get_flag('Py_UNICODE_SIZE',
-                    lambda: sys.maxunicode == 0x10ffff,
-                    expected=4,
-                    warn=(impl == 'cp' and
-                          sys.version_info < (3, 3))) \
-                and sys.version_info < (3, 3):
-            u = 'u'
-        abi = '%s%s%s%s%s' % (impl, get_impl_ver(), d, m, u)
-    elif soabi and soabi.startswith('cpython-'):
-        abi = 'cp' + soabi.split('-')[1]
-    elif soabi:
-        abi = soabi.replace('.', '_').replace('-', '_')
-    else:
-        abi = None
-    return abi
-
-
-def _is_running_32bit():
-    # type: () -> bool
-    return sys.maxsize == 2147483647
-
-
-def get_platform():
-    # type: () -> str
-    """Return our platform name 'win32', 'linux_x86_64'"""
-    if sys.platform == 'darwin':
-        # distutils.util.get_platform() returns the release based on the value
-        # of MACOSX_DEPLOYMENT_TARGET on which Python was built, which may
-        # be significantly older than the user's current machine.
-        release, _, machine = platform.mac_ver()
-        split_ver = release.split('.')
-
-        if machine == "x86_64" and _is_running_32bit():
-            machine = "i386"
-        elif machine == "ppc64" and _is_running_32bit():
-            machine = "ppc"
-
-        return 'macosx_{}_{}_{}'.format(split_ver[0], split_ver[1], machine)
-
-    # XXX remove distutils dependency
-    result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
-    if result == "linux_x86_64" and _is_running_32bit():
-        # 32 bit Python program (running on a 64 bit Linux): pip should only
-        # install and run 32 bit compiled extensions in that case.
-        result = "linux_i686"
-
-    return result
-
-
-def is_manylinux1_compatible():
-    # type: () -> bool
-    # Only Linux, and only x86-64 / i686
-    if get_platform() not in {"linux_x86_64", "linux_i686"}:
-        return False
-
-    # Check for presence of _manylinux module
-    try:
-        import _manylinux
-        return bool(_manylinux.manylinux1_compatible)
-    except (ImportError, AttributeError):
-        # Fall through to heuristic check below
-        pass
-
-    # Check glibc version. CentOS 5 uses glibc 2.5.
-    return pip._internal.utils.glibc.have_compatible_glibc(2, 5)
-
-
-def is_manylinux2010_compatible():
-    # type: () -> bool
-    # Only Linux, and only x86-64 / i686
-    if get_platform() not in {"linux_x86_64", "linux_i686"}:
-        return False
-
-    # Check for presence of _manylinux module
-    try:
-        import _manylinux
-        return bool(_manylinux.manylinux2010_compatible)
-    except (ImportError, AttributeError):
-        # Fall through to heuristic check below
-        pass
-
-    # Check glibc version. CentOS 6 uses glibc 2.12.
-    return pip._internal.utils.glibc.have_compatible_glibc(2, 12)
-
-
-def get_darwin_arches(major, minor, machine):
-    # type: (int, int, str) -> List[str]
-    """Return a list of supported arches (including group arches) for
-    the given major, minor and machine architecture of an macOS machine.
-    """
-    arches = []
-
-    def _supports_arch(major, minor, arch):
-        # type: (int, int, str) -> bool
-        # Looking at the application support for macOS versions in the chart
-        # provided by https://en.wikipedia.org/wiki/OS_X#Versions it appears
-        # our timeline looks roughly like:
-        #
-        # 10.0 - Introduces ppc support.
-        # 10.4 - Introduces ppc64, i386, and x86_64 support, however the ppc64
-        #        and x86_64 support is CLI only, and cannot be used for GUI
-        #        applications.
-        # 10.5 - Extends ppc64 and x86_64 support to cover GUI applications.
-        # 10.6 - Drops support for ppc64
-        # 10.7 - Drops support for ppc
-        #
-        # Given that we do not know if we're installing a CLI or a GUI
-        # application, we must be conservative and assume it might be a GUI
-        # application and behave as if ppc64 and x86_64 support did not occur
-        # until 10.5.
-        #
-        # Note: The above information is taken from the "Application support"
-        #       column in the chart not the "Processor support" since I believe
-        #       that we care about what instruction sets an application can use
-        #       not which processors the OS supports.
-        if arch == 'ppc':
-            return (major, minor) <= (10, 5)
-        if arch == 'ppc64':
-            return (major, minor) == (10, 5)
-        if arch == 'i386':
-            return (major, minor) >= (10, 4)
-        if arch == 'x86_64':
-            return (major, minor) >= (10, 5)
-        if arch in groups:
-            for garch in groups[arch]:
-                if _supports_arch(major, minor, garch):
-                    return True
-        return False
-
-    groups = OrderedDict([
-        ("fat", ("i386", "ppc")),
-        ("intel", ("x86_64", "i386")),
-        ("fat64", ("x86_64", "ppc64")),
-        ("fat32", ("x86_64", "i386", "ppc")),
-    ])  # type: Dict[str, Tuple[str, ...]]
-
-    if _supports_arch(major, minor, machine):
-        arches.append(machine)
-
-    for garch in groups:
-        if machine in groups[garch] and _supports_arch(major, minor, garch):
-            arches.append(garch)
-
-    arches.append('universal')
-
-    return arches
-
-
-def get_all_minor_versions_as_strings(version_info):
-    # type: (Tuple[int, ...]) -> List[str]
-    versions = []
-    major = version_info[:-1]
-    # Support all previous minor Python versions.
-    for minor in range(version_info[-1], -1, -1):
-        versions.append(''.join(map(str, major + (minor,))))
-    return versions
-
-
-def get_supported(
-    versions=None,  # type: Optional[List[str]]
-    noarch=False,  # type: bool
-    platform=None,  # type: Optional[str]
-    impl=None,  # type: Optional[str]
-    abi=None  # type: Optional[str]
-):
-    # type: (...) -> List[Pep425Tag]
-    """Return a list of supported tags for each version specified in
-    `versions`.
-
-    :param versions: a list of string versions, of the form ["33", "32"],
-        or None. The first version will be assumed to support our ABI.
-    :param platform: specify the exact platform you want valid
-        tags for, or None. If None, use the local system platform.
-    :param impl: specify the exact implementation you want valid
-        tags for, or None. If None, use the local interpreter impl.
-    :param abi: specify the exact abi you want valid
-        tags for, or None. If None, use the local interpreter abi.
-    """
-    supported = []
-
-    # Versions must be given with respect to the preference
-    if versions is None:
-        version_info = get_impl_version_info()
-        versions = get_all_minor_versions_as_strings(version_info)
-
-    impl = impl or get_abbr_impl()
-
-    abis = []  # type: List[str]
-
-    abi = abi or get_abi_tag()
-    if abi:
-        abis[0:0] = [abi]
-
-    abi3s = set()
-    for suffix in get_extension_suffixes():
-        if suffix.startswith('.abi'):
-            abi3s.add(suffix.split('.', 2)[1])
-
-    abis.extend(sorted(list(abi3s)))
-
-    abis.append('none')
-
-    if not noarch:
-        arch = platform or get_platform()
-        arch_prefix, arch_sep, arch_suffix = arch.partition('_')
-        if arch.startswith('macosx'):
-            # support macosx-10.6-intel on macosx-10.9-x86_64
-            match = _osx_arch_pat.match(arch)
-            if match:
-                name, major, minor, actual_arch = match.groups()
-                tpl = '{}_{}_%i_%s'.format(name, major)
-                arches = []
-                for m in reversed(range(int(minor) + 1)):
-                    for a in get_darwin_arches(int(major), m, actual_arch):
-                        arches.append(tpl % (m, a))
-            else:
-                # arch pattern didn't match (?!)
-                arches = [arch]
-        elif arch_prefix == 'manylinux2010':
-            # manylinux1 wheels run on most manylinux2010 systems with the
-            # exception of wheels depending on ncurses. PEP 571 states
-            # manylinux1 wheels should be considered manylinux2010 wheels:
-            # https://www.python.org/dev/peps/pep-0571/#backwards-compatibility-with-manylinux1-wheels
-            arches = [arch, 'manylinux1' + arch_sep + arch_suffix]
-        elif platform is None:
-            arches = []
-            if is_manylinux2010_compatible():
-                arches.append('manylinux2010' + arch_sep + arch_suffix)
-            if is_manylinux1_compatible():
-                arches.append('manylinux1' + arch_sep + arch_suffix)
-            arches.append(arch)
-        else:
-            arches = [arch]
-
-        # Current version, current API (built specifically for our Python):
-        for abi in abis:
-            for arch in arches:
-                supported.append(('%s%s' % (impl, versions[0]), abi, arch))
-
-        # abi3 modules compatible with older version of Python
-        for version in versions[1:]:
-            # abi3 was introduced in Python 3.2
-            if version in {'31', '30'}:
-                break
-            for abi in abi3s:   # empty set if not Python 3
-                for arch in arches:
-                    supported.append(("%s%s" % (impl, version), abi, arch))
-
-        # Has binaries, does not use the Python API:
-        for arch in arches:
-            supported.append(('py%s' % (versions[0][0]), 'none', arch))
-
-    # No abi / arch, but requires our implementation:
-    supported.append(('%s%s' % (impl, versions[0]), 'none', 'any'))
-    # Tagged specifically as being cross-version compatible
-    # (with just the major version specified)
-    supported.append(('%s%s' % (impl, versions[0][0]), 'none', 'any'))
-
-    # No abi / arch, generic Python
-    for i, version in enumerate(versions):
-        supported.append(('py%s' % (version,), 'none', 'any'))
-        if i == 0:
-            supported.append(('py%s' % (version[0]), 'none', 'any'))
-
-    return supported
-
-
-implementation_tag = get_impl_tag()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/pyproject.py

@@ -1,171 +0,0 @@
-from __future__ import absolute_import
-
-import io
-import os
-import sys
-
-from pip._vendor import pytoml, six
-
-from pip._internal.exceptions import InstallationError
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Any, Tuple, Optional, List  # noqa: F401
-
-
-def _is_list_of_str(obj):
-    # type: (Any) -> bool
-    return (
-        isinstance(obj, list) and
-        all(isinstance(item, six.string_types) for item in obj)
-    )
-
-
-def make_pyproject_path(setup_py_dir):
-    # type: (str) -> str
-    path = os.path.join(setup_py_dir, 'pyproject.toml')
-
-    # Python2 __file__ should not be unicode
-    if six.PY2 and isinstance(path, six.text_type):
-        path = path.encode(sys.getfilesystemencoding())
-
-    return path
-
-
-def load_pyproject_toml(
-    use_pep517,  # type: Optional[bool]
-    pyproject_toml,  # type: str
-    setup_py,  # type: str
-    req_name  # type: str
-):
-    # type: (...) -> Optional[Tuple[List[str], str, List[str]]]
-    """Load the pyproject.toml file.
-
-    Parameters:
-        use_pep517 - Has the user requested PEP 517 processing? None
-                     means the user hasn't explicitly specified.
-        pyproject_toml - Location of the project's pyproject.toml file
-        setup_py - Location of the project's setup.py file
-        req_name - The name of the requirement we're processing (for
-                   error reporting)
-
-    Returns:
-        None if we should use the legacy code path, otherwise a tuple
-        (
-            requirements from pyproject.toml,
-            name of PEP 517 backend,
-            requirements we should check are installed after setting
-                up the build environment
-        )
-    """
-    has_pyproject = os.path.isfile(pyproject_toml)
-    has_setup = os.path.isfile(setup_py)
-
-    if has_pyproject:
-        with io.open(pyproject_toml, encoding="utf-8") as f:
-            pp_toml = pytoml.load(f)
-        build_system = pp_toml.get("build-system")
-    else:
-        build_system = None
-
-    # The following cases must use PEP 517
-    # We check for use_pep517 being non-None and falsey because that means
-    # the user explicitly requested --no-use-pep517.  The value 0 as
-    # opposed to False can occur when the value is provided via an
-    # environment variable or config file option (due to the quirk of
-    # strtobool() returning an integer in pip's configuration code).
-    if has_pyproject and not has_setup:
-        if use_pep517 is not None and not use_pep517:
-            raise InstallationError(
-                "Disabling PEP 517 processing is invalid: "
-                "project does not have a setup.py"
-            )
-        use_pep517 = True
-    elif build_system and "build-backend" in build_system:
-        if use_pep517 is not None and not use_pep517:
-            raise InstallationError(
-                "Disabling PEP 517 processing is invalid: "
-                "project specifies a build backend of {} "
-                "in pyproject.toml".format(
-                    build_system["build-backend"]
-                )
-            )
-        use_pep517 = True
-
-    # If we haven't worked out whether to use PEP 517 yet,
-    # and the user hasn't explicitly stated a preference,
-    # we do so if the project has a pyproject.toml file.
-    elif use_pep517 is None:
-        use_pep517 = has_pyproject
-
-    # At this point, we know whether we're going to use PEP 517.
-    assert use_pep517 is not None
-
-    # If we're using the legacy code path, there is nothing further
-    # for us to do here.
-    if not use_pep517:
-        return None
-
-    if build_system is None:
-        # Either the user has a pyproject.toml with no build-system
-        # section, or the user has no pyproject.toml, but has opted in
-        # explicitly via --use-pep517.
-        # In the absence of any explicit backend specification, we
-        # assume the setuptools backend that most closely emulates the
-        # traditional direct setup.py execution, and require wheel and
-        # a version of setuptools that supports that backend.
-
-        build_system = {
-            "requires": ["setuptools>=40.8.0", "wheel"],
-            "build-backend": "setuptools.build_meta:__legacy__",
-        }
-
-    # If we're using PEP 517, we have build system information (either
-    # from pyproject.toml, or defaulted by the code above).
-    # Note that at this point, we do not know if the user has actually
-    # specified a backend, though.
-    assert build_system is not None
-
-    # Ensure that the build-system section in pyproject.toml conforms
-    # to PEP 518.
-    error_template = (
-        "{package} has a pyproject.toml file that does not comply "
-        "with PEP 518: {reason}"
-    )
-
-    # Specifying the build-system table but not the requires key is invalid
-    if "requires" not in build_system:
-        raise InstallationError(
-            error_template.format(package=req_name, reason=(
-                "it has a 'build-system' table but not "
-                "'build-system.requires' which is mandatory in the table"
-            ))
-        )
-
-    # Error out if requires is not a list of strings
-    requires = build_system["requires"]
-    if not _is_list_of_str(requires):
-        raise InstallationError(error_template.format(
-            package=req_name,
-            reason="'build-system.requires' is not a list of strings.",
-        ))
-
-    backend = build_system.get("build-backend")
-    check = []  # type: List[str]
-    if backend is None:
-        # If the user didn't specify a backend, we assume they want to use
-        # the setuptools backend. But we can't be sure they have included
-        # a version of setuptools which supplies the backend, or wheel
-        # (which is needed by the backend) in their requirements. So we
-        # make a note to check that those requirements are present once
-        # we have set up the environment.
-        # This is quite a lot of work to check for a very specific case. But
-        # the problem is, that case is potentially quite common - projects that
-        # adopted PEP 518 early for the ability to specify requirements to
-        # execute setup.py, but never considered needing to mention the build
-        # tools themselves. The original PEP 518 code had a similar check (but
-        # implemented in a different way).
-        backend = "setuptools.build_meta:__legacy__"
-        check = ["setuptools>=40.8.0", "wheel"]
-
-    return (requires, backend, check)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/__init__.py

@@ -1,77 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-
-from .req_install import InstallRequirement
-from .req_set import RequirementSet
-from .req_file import parse_requirements
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import List, Sequence  # noqa: F401
-
-__all__ = [
-    "RequirementSet", "InstallRequirement",
-    "parse_requirements", "install_given_reqs",
-]
-
-logger = logging.getLogger(__name__)
-
-
-def install_given_reqs(
-    to_install,  # type: List[InstallRequirement]
-    install_options,  # type: List[str]
-    global_options=(),  # type: Sequence[str]
-    *args, **kwargs
-):
-    # type: (...) -> List[InstallRequirement]
-    """
-    Install everything in the given list.
-
-    (to be called after having downloaded and unpacked the packages)
-    """
-
-    if to_install:
-        logger.info(
-            'Installing collected packages: %s',
-            ', '.join([req.name for req in to_install]),
-        )
-
-    with indent_log():
-        for requirement in to_install:
-            if requirement.conflicts_with:
-                logger.info(
-                    'Found existing installation: %s',
-                    requirement.conflicts_with,
-                )
-                with indent_log():
-                    uninstalled_pathset = requirement.uninstall(
-                        auto_confirm=True
-                    )
-            try:
-                requirement.install(
-                    install_options,
-                    global_options,
-                    *args,
-                    **kwargs
-                )
-            except Exception:
-                should_rollback = (
-                    requirement.conflicts_with and
-                    not requirement.install_succeeded
-                )
-                # if install did not succeed, rollback previous uninstall
-                if should_rollback:
-                    uninstalled_pathset.rollback()
-                raise
-            else:
-                should_commit = (
-                    requirement.conflicts_with and
-                    requirement.install_succeeded
-                )
-                if should_commit:
-                    uninstalled_pathset.commit()
-            requirement.remove_temporary_source()
-
-    return to_install

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/constructors.py

@@ -1,339 +0,0 @@
-"""Backing implementation for InstallRequirement's various constructors
-
-The idea here is that these formed a major chunk of InstallRequirement's size
-so, moving them and support code dedicated to them outside of that class
-helps creates for better understandability for the rest of the code.
-
-These are meant to be used elsewhere within pip to create instances of
-InstallRequirement.
-"""
-
-import logging
-import os
-import re
-
-from pip._vendor.packaging.markers import Marker
-from pip._vendor.packaging.requirements import InvalidRequirement, Requirement
-from pip._vendor.packaging.specifiers import Specifier
-from pip._vendor.pkg_resources import RequirementParseError, parse_requirements
-
-from pip._internal.download import (
-    is_archive_file, is_url, path_to_url, url_to_path,
-)
-from pip._internal.exceptions import InstallationError
-from pip._internal.models.index import PyPI, TestPyPI
-from pip._internal.models.link import Link
-from pip._internal.pyproject import make_pyproject_path
-from pip._internal.req.req_install import InstallRequirement
-from pip._internal.utils.misc import is_installable_dir
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.vcs import vcs
-from pip._internal.wheel import Wheel
-
-if MYPY_CHECK_RUNNING:
-    from typing import (   # noqa: F401
-        Optional, Tuple, Set, Any, Union, Text, Dict,
-    )
-    from pip._internal.cache import WheelCache  # noqa: F401
-
-
-__all__ = [
-    "install_req_from_editable", "install_req_from_line",
-    "parse_editable"
-]
-
-logger = logging.getLogger(__name__)
-operators = Specifier._operators.keys()
-
-
-def _strip_extras(path):
-    # type: (str) -> Tuple[str, Optional[str]]
-    m = re.match(r'^(.+)(\[[^\]]+\])$', path)
-    extras = None
-    if m:
-        path_no_extras = m.group(1)
-        extras = m.group(2)
-    else:
-        path_no_extras = path
-
-    return path_no_extras, extras
-
-
-def parse_editable(editable_req):
-    # type: (str) -> Tuple[Optional[str], str, Optional[Set[str]]]
-    """Parses an editable requirement into:
-        - a requirement name
-        - an URL
-        - extras
-        - editable options
-    Accepted requirements:
-        svn+http://blahblah@rev#egg=Foobar[baz]&subdirectory=version_subdir
-        .[some_extra]
-    """
-
-    url = editable_req
-
-    # If a file path is specified with extras, strip off the extras.
-    url_no_extras, extras = _strip_extras(url)
-
-    if os.path.isdir(url_no_extras):
-        if not os.path.exists(os.path.join(url_no_extras, 'setup.py')):
-            msg = (
-                'File "setup.py" not found. Directory cannot be installed '
-                'in editable mode: {}'.format(os.path.abspath(url_no_extras))
-            )
-            pyproject_path = make_pyproject_path(url_no_extras)
-            if os.path.isfile(pyproject_path):
-                msg += (
-                    '\n(A "pyproject.toml" file was found, but editable '
-                    'mode currently requires a setup.py based build.)'
-                )
-            raise InstallationError(msg)
-
-        # Treating it as code that has already been checked out
-        url_no_extras = path_to_url(url_no_extras)
-
-    if url_no_extras.lower().startswith('file:'):
-        package_name = Link(url_no_extras).egg_fragment
-        if extras:
-            return (
-                package_name,
-                url_no_extras,
-                Requirement("placeholder" + extras.lower()).extras,
-            )
-        else:
-            return package_name, url_no_extras, None
-
-    for version_control in vcs:
-        if url.lower().startswith('%s:' % version_control):
-            url = '%s+%s' % (version_control, url)
-            break
-
-    if '+' not in url:
-        raise InstallationError(
-            '%s should either be a path to a local project or a VCS url '
-            'beginning with svn+, git+, hg+, or bzr+' %
-            editable_req
-        )
-
-    vc_type = url.split('+', 1)[0].lower()
-
-    if not vcs.get_backend(vc_type):
-        error_message = 'For --editable=%s only ' % editable_req + \
-            ', '.join([backend.name + '+URL' for backend in vcs.backends]) + \
-            ' is currently supported'
-        raise InstallationError(error_message)
-
-    package_name = Link(url).egg_fragment
-    if not package_name:
-        raise InstallationError(
-            "Could not detect requirement name for '%s', please specify one "
-            "with #egg=your_package_name" % editable_req
-        )
-    return package_name, url, None
-
-
-def deduce_helpful_msg(req):
-    # type: (str) -> str
-    """Returns helpful msg in case requirements file does not exist,
-    or cannot be parsed.
-
-    :params req: Requirements file path
-    """
-    msg = ""
-    if os.path.exists(req):
-        msg = " It does exist."
-        # Try to parse and check if it is a requirements file.
-        try:
-            with open(req, 'r') as fp:
-                # parse first line only
-                next(parse_requirements(fp.read()))
-                msg += " The argument you provided " + \
-                    "(%s) appears to be a" % (req) + \
-                    " requirements file. If that is the" + \
-                    " case, use the '-r' flag to install" + \
-                    " the packages specified within it."
-        except RequirementParseError:
-            logger.debug("Cannot parse '%s' as requirements \
-            file" % (req), exc_info=True)
-    else:
-        msg += " File '%s' does not exist." % (req)
-    return msg
-
-
-# ---- The actual constructors follow ----
-
-
-def install_req_from_editable(
-    editable_req,  # type: str
-    comes_from=None,  # type: Optional[str]
-    use_pep517=None,  # type: Optional[bool]
-    isolated=False,  # type: bool
-    options=None,  # type: Optional[Dict[str, Any]]
-    wheel_cache=None,  # type: Optional[WheelCache]
-    constraint=False  # type: bool
-):
-    # type: (...) -> InstallRequirement
-    name, url, extras_override = parse_editable(editable_req)
-    if url.startswith('file:'):
-        source_dir = url_to_path(url)
-    else:
-        source_dir = None
-
-    if name is not None:
-        try:
-            req = Requirement(name)
-        except InvalidRequirement:
-            raise InstallationError("Invalid requirement: '%s'" % name)
-    else:
-        req = None
-    return InstallRequirement(
-        req, comes_from, source_dir=source_dir,
-        editable=True,
-        link=Link(url),
-        constraint=constraint,
-        use_pep517=use_pep517,
-        isolated=isolated,
-        options=options if options else {},
-        wheel_cache=wheel_cache,
-        extras=extras_override or (),
-    )
-
-
-def install_req_from_line(
-    name,  # type: str
-    comes_from=None,  # type: Optional[Union[str, InstallRequirement]]
-    use_pep517=None,  # type: Optional[bool]
-    isolated=False,  # type: bool
-    options=None,  # type: Optional[Dict[str, Any]]
-    wheel_cache=None,  # type: Optional[WheelCache]
-    constraint=False  # type: bool
-):
-    # type: (...) -> InstallRequirement
-    """Creates an InstallRequirement from a name, which might be a
-    requirement, directory containing 'setup.py', filename, or URL.
-    """
-    if is_url(name):
-        marker_sep = '; '
-    else:
-        marker_sep = ';'
-    if marker_sep in name:
-        name, markers_as_string = name.split(marker_sep, 1)
-        markers_as_string = markers_as_string.strip()
-        if not markers_as_string:
-            markers = None
-        else:
-            markers = Marker(markers_as_string)
-    else:
-        markers = None
-    name = name.strip()
-    req_as_string = None
-    path = os.path.normpath(os.path.abspath(name))
-    link = None
-    extras_as_string = None
-
-    if is_url(name):
-        link = Link(name)
-    else:
-        p, extras_as_string = _strip_extras(path)
-        looks_like_dir = os.path.isdir(p) and (
-            os.path.sep in name or
-            (os.path.altsep is not None and os.path.altsep in name) or
-            name.startswith('.')
-        )
-        if looks_like_dir:
-            if not is_installable_dir(p):
-                raise InstallationError(
-                    "Directory %r is not installable. Neither 'setup.py' "
-                    "nor 'pyproject.toml' found." % name
-                )
-            link = Link(path_to_url(p))
-        elif is_archive_file(p):
-            if not os.path.isfile(p):
-                logger.warning(
-                    'Requirement %r looks like a filename, but the '
-                    'file does not exist',
-                    name
-                )
-            link = Link(path_to_url(p))
-
-    # it's a local file, dir, or url
-    if link:
-        # Handle relative file URLs
-        if link.scheme == 'file' and re.search(r'\.\./', link.url):
-            link = Link(
-                path_to_url(os.path.normpath(os.path.abspath(link.path))))
-        # wheel file
-        if link.is_wheel:
-            wheel = Wheel(link.filename)  # can raise InvalidWheelFilename
-            req_as_string = "%s==%s" % (wheel.name, wheel.version)
-        else:
-            # set the req to the egg fragment.  when it's not there, this
-            # will become an 'unnamed' requirement
-            req_as_string = link.egg_fragment
-
-    # a requirement specifier
-    else:
-        req_as_string = name
-
-    if extras_as_string:
-        extras = Requirement("placeholder" + extras_as_string.lower()).extras
-    else:
-        extras = ()
-    if req_as_string is not None:
-        try:
-            req = Requirement(req_as_string)
-        except InvalidRequirement:
-            if os.path.sep in req_as_string:
-                add_msg = "It looks like a path."
-                add_msg += deduce_helpful_msg(req_as_string)
-            elif ('=' in req_as_string and
-                  not any(op in req_as_string for op in operators)):
-                add_msg = "= is not a valid operator. Did you mean == ?"
-            else:
-                add_msg = ""
-            raise InstallationError(
-                "Invalid requirement: '%s'\n%s" % (req_as_string, add_msg)
-            )
-    else:
-        req = None
-
-    return InstallRequirement(
-        req, comes_from, link=link, markers=markers,
-        use_pep517=use_pep517, isolated=isolated,
-        options=options if options else {},
-        wheel_cache=wheel_cache,
-        constraint=constraint,
-        extras=extras,
-    )
-
-
-def install_req_from_req_string(
-    req_string,  # type: str
-    comes_from=None,  # type: Optional[InstallRequirement]
-    isolated=False,  # type: bool
-    wheel_cache=None,  # type: Optional[WheelCache]
-    use_pep517=None  # type: Optional[bool]
-):
-    # type: (...) -> InstallRequirement
-    try:
-        req = Requirement(req_string)
-    except InvalidRequirement:
-        raise InstallationError("Invalid requirement: '%s'" % req)
-
-    domains_not_allowed = [
-        PyPI.file_storage_domain,
-        TestPyPI.file_storage_domain,
-    ]
-    if req.url and comes_from.link.netloc in domains_not_allowed:
-        # Explicitly disallow pypi packages that depend on external urls
-        raise InstallationError(
-            "Packages installed from PyPI cannot depend on packages "
-            "which are not also hosted on PyPI.\n"
-            "%s depends on %s " % (comes_from.name, req)
-        )
-
-    return InstallRequirement(
-        req, comes_from, isolated=isolated, wheel_cache=wheel_cache,
-        use_pep517=use_pep517
-    )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/req_file.py

@@ -1,382 +0,0 @@
-"""
-Requirements file parsing
-"""
-
-from __future__ import absolute_import
-
-import optparse
-import os
-import re
-import shlex
-import sys
-
-from pip._vendor.six.moves import filterfalse
-from pip._vendor.six.moves.urllib import parse as urllib_parse
-
-from pip._internal.cli import cmdoptions
-from pip._internal.download import get_file_content
-from pip._internal.exceptions import RequirementsFileParseError
-from pip._internal.req.constructors import (
-    install_req_from_editable, install_req_from_line,
-)
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Iterator, Tuple, Optional, List, Callable, Text
-    )
-    from pip._internal.req import InstallRequirement  # noqa: F401
-    from pip._internal.cache import WheelCache  # noqa: F401
-    from pip._internal.index import PackageFinder  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-
-    ReqFileLines = Iterator[Tuple[int, Text]]
-
-__all__ = ['parse_requirements']
-
-SCHEME_RE = re.compile(r'^(http|https|file):', re.I)
-COMMENT_RE = re.compile(r'(^|\s)+#.*$')
-
-# Matches environment variable-style values in '${MY_VARIABLE_1}' with the
-# variable name consisting of only uppercase letters, digits or the '_'
-# (underscore). This follows the POSIX standard defined in IEEE Std 1003.1,
-# 2013 Edition.
-ENV_VAR_RE = re.compile(r'(?P<var>\$\{(?P<name>[A-Z0-9_]+)\})')
-
-SUPPORTED_OPTIONS = [
-    cmdoptions.constraints,
-    cmdoptions.editable,
-    cmdoptions.requirements,
-    cmdoptions.no_index,
-    cmdoptions.index_url,
-    cmdoptions.find_links,
-    cmdoptions.extra_index_url,
-    cmdoptions.always_unzip,
-    cmdoptions.no_binary,
-    cmdoptions.only_binary,
-    cmdoptions.pre,
-    cmdoptions.trusted_host,
-    cmdoptions.require_hashes,
-]  # type: List[Callable[..., optparse.Option]]
-
-# options to be passed to requirements
-SUPPORTED_OPTIONS_REQ = [
-    cmdoptions.install_options,
-    cmdoptions.global_options,
-    cmdoptions.hash,
-]  # type: List[Callable[..., optparse.Option]]
-
-# the 'dest' string values
-SUPPORTED_OPTIONS_REQ_DEST = [str(o().dest) for o in SUPPORTED_OPTIONS_REQ]
-
-
-def parse_requirements(
-    filename,  # type: str
-    finder=None,  # type: Optional[PackageFinder]
-    comes_from=None,  # type: Optional[str]
-    options=None,  # type: Optional[optparse.Values]
-    session=None,  # type: Optional[PipSession]
-    constraint=False,  # type: bool
-    wheel_cache=None,  # type: Optional[WheelCache]
-    use_pep517=None  # type: Optional[bool]
-):
-    # type: (...) -> Iterator[InstallRequirement]
-    """Parse a requirements file and yield InstallRequirement instances.
-
-    :param filename:    Path or url of requirements file.
-    :param finder:      Instance of pip.index.PackageFinder.
-    :param comes_from:  Origin description of requirements.
-    :param options:     cli options.
-    :param session:     Instance of pip.download.PipSession.
-    :param constraint:  If true, parsing a constraint file rather than
-        requirements file.
-    :param wheel_cache: Instance of pip.wheel.WheelCache
-    :param use_pep517:  Value of the --use-pep517 option.
-    """
-    if session is None:
-        raise TypeError(
-            "parse_requirements() missing 1 required keyword argument: "
-            "'session'"
-        )
-
-    _, content = get_file_content(
-        filename, comes_from=comes_from, session=session
-    )
-
-    lines_enum = preprocess(content, options)
-
-    for line_number, line in lines_enum:
-        req_iter = process_line(line, filename, line_number, finder,
-                                comes_from, options, session, wheel_cache,
-                                use_pep517=use_pep517, constraint=constraint)
-        for req in req_iter:
-            yield req
-
-
-def preprocess(content, options):
-    # type: (Text, Optional[optparse.Values]) -> ReqFileLines
-    """Split, filter, and join lines, and return a line iterator
-
-    :param content: the content of the requirements file
-    :param options: cli options
-    """
-    lines_enum = enumerate(content.splitlines(), start=1)  # type: ReqFileLines
-    lines_enum = join_lines(lines_enum)
-    lines_enum = ignore_comments(lines_enum)
-    lines_enum = skip_regex(lines_enum, options)
-    lines_enum = expand_env_variables(lines_enum)
-    return lines_enum
-
-
-def process_line(
-    line,  # type: Text
-    filename,  # type: str
-    line_number,  # type: int
-    finder=None,  # type: Optional[PackageFinder]
-    comes_from=None,  # type: Optional[str]
-    options=None,  # type: Optional[optparse.Values]
-    session=None,  # type: Optional[PipSession]
-    wheel_cache=None,  # type: Optional[WheelCache]
-    use_pep517=None,  # type: Optional[bool]
-    constraint=False  # type: bool
-):
-    # type: (...) -> Iterator[InstallRequirement]
-    """Process a single requirements line; This can result in creating/yielding
-    requirements, or updating the finder.
-
-    For lines that contain requirements, the only options that have an effect
-    are from SUPPORTED_OPTIONS_REQ, and they are scoped to the
-    requirement. Other options from SUPPORTED_OPTIONS may be present, but are
-    ignored.
-
-    For lines that do not contain requirements, the only options that have an
-    effect are from SUPPORTED_OPTIONS. Options from SUPPORTED_OPTIONS_REQ may
-    be present, but are ignored. These lines may contain multiple options
-    (although our docs imply only one is supported), and all our parsed and
-    affect the finder.
-
-    :param constraint: If True, parsing a constraints file.
-    :param options: OptionParser options that we may update
-    """
-    parser = build_parser(line)
-    defaults = parser.get_default_values()
-    defaults.index_url = None
-    if finder:
-        defaults.format_control = finder.format_control
-    args_str, options_str = break_args_options(line)
-    # Prior to 2.7.3, shlex cannot deal with unicode entries
-    if sys.version_info < (2, 7, 3):
-        # https://github.com/python/mypy/issues/1174
-        options_str = options_str.encode('utf8')  # type: ignore
-    # https://github.com/python/mypy/issues/1174
-    opts, _ = parser.parse_args(
-        shlex.split(options_str), defaults)  # type: ignore
-
-    # preserve for the nested code path
-    line_comes_from = '%s %s (line %s)' % (
-        '-c' if constraint else '-r', filename, line_number,
-    )
-
-    # yield a line requirement
-    if args_str:
-        isolated = options.isolated_mode if options else False
-        if options:
-            cmdoptions.check_install_build_global(options, opts)
-        # get the options that apply to requirements
-        req_options = {}
-        for dest in SUPPORTED_OPTIONS_REQ_DEST:
-            if dest in opts.__dict__ and opts.__dict__[dest]:
-                req_options[dest] = opts.__dict__[dest]
-        yield install_req_from_line(
-            args_str, line_comes_from, constraint=constraint,
-            use_pep517=use_pep517,
-            isolated=isolated, options=req_options, wheel_cache=wheel_cache
-        )
-
-    # yield an editable requirement
-    elif opts.editables:
-        isolated = options.isolated_mode if options else False
-        yield install_req_from_editable(
-            opts.editables[0], comes_from=line_comes_from,
-            use_pep517=use_pep517,
-            constraint=constraint, isolated=isolated, wheel_cache=wheel_cache
-        )
-
-    # parse a nested requirements file
-    elif opts.requirements or opts.constraints:
-        if opts.requirements:
-            req_path = opts.requirements[0]
-            nested_constraint = False
-        else:
-            req_path = opts.constraints[0]
-            nested_constraint = True
-        # original file is over http
-        if SCHEME_RE.search(filename):
-            # do a url join so relative paths work
-            req_path = urllib_parse.urljoin(filename, req_path)
-        # original file and nested file are paths
-        elif not SCHEME_RE.search(req_path):
-            # do a join so relative paths work
-            req_path = os.path.join(os.path.dirname(filename), req_path)
-        # TODO: Why not use `comes_from='-r {} (line {})'` here as well?
-        parsed_reqs = parse_requirements(
-            req_path, finder, comes_from, options, session,
-            constraint=nested_constraint, wheel_cache=wheel_cache
-        )
-        for req in parsed_reqs:
-            yield req
-
-    # percolate hash-checking option upward
-    elif opts.require_hashes:
-        options.require_hashes = opts.require_hashes
-
-    # set finder options
-    elif finder:
-        if opts.index_url:
-            finder.index_urls = [opts.index_url]
-        if opts.no_index is True:
-            finder.index_urls = []
-        if opts.extra_index_urls:
-            finder.index_urls.extend(opts.extra_index_urls)
-        if opts.find_links:
-            # FIXME: it would be nice to keep track of the source
-            # of the find_links: support a find-links local path
-            # relative to a requirements file.
-            value = opts.find_links[0]
-            req_dir = os.path.dirname(os.path.abspath(filename))
-            relative_to_reqs_file = os.path.join(req_dir, value)
-            if os.path.exists(relative_to_reqs_file):
-                value = relative_to_reqs_file
-            finder.find_links.append(value)
-        if opts.pre:
-            finder.allow_all_prereleases = True
-        if opts.trusted_hosts:
-            finder.secure_origins.extend(
-                ("*", host, "*") for host in opts.trusted_hosts)
-
-
-def break_args_options(line):
-    # type: (Text) -> Tuple[str, Text]
-    """Break up the line into an args and options string.  We only want to shlex
-    (and then optparse) the options, not the args.  args can contain markers
-    which are corrupted by shlex.
-    """
-    tokens = line.split(' ')
-    args = []
-    options = tokens[:]
-    for token in tokens:
-        if token.startswith('-') or token.startswith('--'):
-            break
-        else:
-            args.append(token)
-            options.pop(0)
-    return ' '.join(args), ' '.join(options)  # type: ignore
-
-
-def build_parser(line):
-    # type: (Text) -> optparse.OptionParser
-    """
-    Return a parser for parsing requirement lines
-    """
-    parser = optparse.OptionParser(add_help_option=False)
-
-    option_factories = SUPPORTED_OPTIONS + SUPPORTED_OPTIONS_REQ
-    for option_factory in option_factories:
-        option = option_factory()
-        parser.add_option(option)
-
-    # By default optparse sys.exits on parsing errors. We want to wrap
-    # that in our own exception.
-    def parser_exit(self, msg):
-        # add offending line
-        msg = 'Invalid requirement: %s\n%s' % (line, msg)
-        raise RequirementsFileParseError(msg)
-    # NOTE: mypy disallows assigning to a method
-    #       https://github.com/python/mypy/issues/2427
-    parser.exit = parser_exit  # type: ignore
-
-    return parser
-
-
-def join_lines(lines_enum):
-    # type: (ReqFileLines) -> ReqFileLines
-    """Joins a line ending in '\' with the previous line (except when following
-    comments).  The joined line takes on the index of the first line.
-    """
-    primary_line_number = None
-    new_line = []  # type: List[Text]
-    for line_number, line in lines_enum:
-        if not line.endswith('\\') or COMMENT_RE.match(line):
-            if COMMENT_RE.match(line):
-                # this ensures comments are always matched later
-                line = ' ' + line
-            if new_line:
-                new_line.append(line)
-                yield primary_line_number, ''.join(new_line)
-                new_line = []
-            else:
-                yield line_number, line
-        else:
-            if not new_line:
-                primary_line_number = line_number
-            new_line.append(line.strip('\\'))
-
-    # last line contains \
-    if new_line:
-        yield primary_line_number, ''.join(new_line)
-
-    # TODO: handle space after '\'.
-
-
-def ignore_comments(lines_enum):
-    # type: (ReqFileLines) -> ReqFileLines
-    """
-    Strips comments and filter empty lines.
-    """
-    for line_number, line in lines_enum:
-        line = COMMENT_RE.sub('', line)
-        line = line.strip()
-        if line:
-            yield line_number, line
-
-
-def skip_regex(lines_enum, options):
-    # type: (ReqFileLines, Optional[optparse.Values]) -> ReqFileLines
-    """
-    Skip lines that match '--skip-requirements-regex' pattern
-
-    Note: the regex pattern is only built once
-    """
-    skip_regex = options.skip_requirements_regex if options else None
-    if skip_regex:
-        pattern = re.compile(skip_regex)
-        lines_enum = filterfalse(lambda e: pattern.search(e[1]), lines_enum)
-    return lines_enum
-
-
-def expand_env_variables(lines_enum):
-    # type: (ReqFileLines) -> ReqFileLines
-    """Replace all environment variables that can be retrieved via `os.getenv`.
-
-    The only allowed format for environment variables defined in the
-    requirement file is `${MY_VARIABLE_1}` to ensure two things:
-
-    1. Strings that contain a `$` aren't accidentally (partially) expanded.
-    2. Ensure consistency across platforms for requirement files.
-
-    These points are the result of a discusssion on the `github pull
-    request #3514 <https://github.com/pypa/pip/pull/3514>`_.
-
-    Valid characters in variable names follow the `POSIX standard
-    <http://pubs.opengroup.org/onlinepubs/9699919799/>`_ and are limited
-    to uppercase letter, digits and the `_` (underscore).
-    """
-    for line_number, line in lines_enum:
-        for env_var, var_name in ENV_VAR_RE.findall(line):
-            value = os.getenv(var_name)
-            if not value:
-                continue
-
-            line = line.replace(env_var, value)
-
-        yield line_number, line

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/req_set.py

@@ -1,197 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-from collections import OrderedDict
-
-from pip._internal.exceptions import InstallationError
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-from pip._internal.wheel import Wheel
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, List, Tuple, Dict, Iterable  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-
-
-logger = logging.getLogger(__name__)
-
-
-class RequirementSet(object):
-
-    def __init__(self, require_hashes=False, check_supported_wheels=True):
-        # type: (bool, bool) -> None
-        """Create a RequirementSet.
-        """
-
-        self.requirements = OrderedDict()  # type: Dict[str, InstallRequirement]  # noqa: E501
-        self.require_hashes = require_hashes
-        self.check_supported_wheels = check_supported_wheels
-
-        # Mapping of alias: real_name
-        self.requirement_aliases = {}  # type: Dict[str, str]
-        self.unnamed_requirements = []  # type: List[InstallRequirement]
-        self.successfully_downloaded = []  # type: List[InstallRequirement]
-        self.reqs_to_cleanup = []  # type: List[InstallRequirement]
-
-    def __str__(self):
-        reqs = [req for req in self.requirements.values()
-                if not req.comes_from]
-        reqs.sort(key=lambda req: req.name.lower())
-        return ' '.join([str(req.req) for req in reqs])
-
-    def __repr__(self):
-        reqs = [req for req in self.requirements.values()]
-        reqs.sort(key=lambda req: req.name.lower())
-        reqs_str = ', '.join([str(req.req) for req in reqs])
-        return ('<%s object; %d requirement(s): %s>'
-                % (self.__class__.__name__, len(reqs), reqs_str))
-
-    def add_requirement(
-        self,
-        install_req,  # type: InstallRequirement
-        parent_req_name=None,  # type: Optional[str]
-        extras_requested=None  # type: Optional[Iterable[str]]
-    ):
-        # type: (...) -> Tuple[List[InstallRequirement], Optional[InstallRequirement]]  # noqa: E501
-        """Add install_req as a requirement to install.
-
-        :param parent_req_name: The name of the requirement that needed this
-            added. The name is used because when multiple unnamed requirements
-            resolve to the same name, we could otherwise end up with dependency
-            links that point outside the Requirements set. parent_req must
-            already be added. Note that None implies that this is a user
-            supplied requirement, vs an inferred one.
-        :param extras_requested: an iterable of extras used to evaluate the
-            environment markers.
-        :return: Additional requirements to scan. That is either [] if
-            the requirement is not applicable, or [install_req] if the
-            requirement is applicable and has just been added.
-        """
-        name = install_req.name
-
-        # If the markers do not match, ignore this requirement.
-        if not install_req.match_markers(extras_requested):
-            logger.info(
-                "Ignoring %s: markers '%s' don't match your environment",
-                name, install_req.markers,
-            )
-            return [], None
-
-        # If the wheel is not supported, raise an error.
-        # Should check this after filtering out based on environment markers to
-        # allow specifying different wheels based on the environment/OS, in a
-        # single requirements file.
-        if install_req.link and install_req.link.is_wheel:
-            wheel = Wheel(install_req.link.filename)
-            if self.check_supported_wheels and not wheel.supported():
-                raise InstallationError(
-                    "%s is not a supported wheel on this platform." %
-                    wheel.filename
-                )
-
-        # This next bit is really a sanity check.
-        assert install_req.is_direct == (parent_req_name is None), (
-            "a direct req shouldn't have a parent and also, "
-            "a non direct req should have a parent"
-        )
-
-        # Unnamed requirements are scanned again and the requirement won't be
-        # added as a dependency until after scanning.
-        if not name:
-            # url or path requirement w/o an egg fragment
-            self.unnamed_requirements.append(install_req)
-            return [install_req], None
-
-        try:
-            existing_req = self.get_requirement(name)
-        except KeyError:
-            existing_req = None
-
-        has_conflicting_requirement = (
-            parent_req_name is None and
-            existing_req and
-            not existing_req.constraint and
-            existing_req.extras == install_req.extras and
-            existing_req.req.specifier != install_req.req.specifier
-        )
-        if has_conflicting_requirement:
-            raise InstallationError(
-                "Double requirement given: %s (already in %s, name=%r)"
-                % (install_req, existing_req, name)
-            )
-
-        # When no existing requirement exists, add the requirement as a
-        # dependency and it will be scanned again after.
-        if not existing_req:
-            self.requirements[name] = install_req
-            # FIXME: what about other normalizations?  E.g., _ vs. -?
-            if name.lower() != name:
-                self.requirement_aliases[name.lower()] = name
-            # We'd want to rescan this requirements later
-            return [install_req], install_req
-
-        # Assume there's no need to scan, and that we've already
-        # encountered this for scanning.
-        if install_req.constraint or not existing_req.constraint:
-            return [], existing_req
-
-        does_not_satisfy_constraint = (
-            install_req.link and
-            not (
-                existing_req.link and
-                install_req.link.path == existing_req.link.path
-            )
-        )
-        if does_not_satisfy_constraint:
-            self.reqs_to_cleanup.append(install_req)
-            raise InstallationError(
-                "Could not satisfy constraints for '%s': "
-                "installation from path or url cannot be "
-                "constrained to a version" % name,
-            )
-        # If we're now installing a constraint, mark the existing
-        # object for real installation.
-        existing_req.constraint = False
-        existing_req.extras = tuple(sorted(
-            set(existing_req.extras) | set(install_req.extras)
-        ))
-        logger.debug(
-            "Setting %s extras to: %s",
-            existing_req, existing_req.extras,
-        )
-        # Return the existing requirement for addition to the parent and
-        # scanning again.
-        return [existing_req], existing_req
-
-    def has_requirement(self, project_name):
-        # type: (str) -> bool
-        name = project_name.lower()
-        if (name in self.requirements and
-           not self.requirements[name].constraint or
-           name in self.requirement_aliases and
-           not self.requirements[self.requirement_aliases[name]].constraint):
-            return True
-        return False
-
-    @property
-    def has_requirements(self):
-        # type: () -> List[InstallRequirement]
-        return list(req for req in self.requirements.values() if not
-                    req.constraint) or self.unnamed_requirements
-
-    def get_requirement(self, project_name):
-        # type: (str) -> InstallRequirement
-        for name in project_name, project_name.lower():
-            if name in self.requirements:
-                return self.requirements[name]
-            if name in self.requirement_aliases:
-                return self.requirements[self.requirement_aliases[name]]
-        raise KeyError("No project with the name %r" % project_name)
-
-    def cleanup_files(self):
-        # type: () -> None
-        """Clean up files, remove builds."""
-        logger.debug('Cleaning up...')
-        with indent_log():
-            for req in self.reqs_to_cleanup:
-                req.remove_temporary_source()

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/req_tracker.py

@@ -1,88 +0,0 @@
-from __future__ import absolute_import
-
-import contextlib
-import errno
-import hashlib
-import logging
-import os
-
-from pip._internal.utils.temp_dir import TempDirectory
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Set, Iterator  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-    from pip._internal.models.link import Link  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-class RequirementTracker(object):
-
-    def __init__(self):
-        # type: () -> None
-        self._root = os.environ.get('PIP_REQ_TRACKER')
-        if self._root is None:
-            self._temp_dir = TempDirectory(delete=False, kind='req-tracker')
-            self._temp_dir.create()
-            self._root = os.environ['PIP_REQ_TRACKER'] = self._temp_dir.path
-            logger.debug('Created requirements tracker %r', self._root)
-        else:
-            self._temp_dir = None
-            logger.debug('Re-using requirements tracker %r', self._root)
-        self._entries = set()  # type: Set[InstallRequirement]
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        self.cleanup()
-
-    def _entry_path(self, link):
-        # type: (Link) -> str
-        hashed = hashlib.sha224(link.url_without_fragment.encode()).hexdigest()
-        return os.path.join(self._root, hashed)
-
-    def add(self, req):
-        # type: (InstallRequirement) -> None
-        link = req.link
-        info = str(req)
-        entry_path = self._entry_path(link)
-        try:
-            with open(entry_path) as fp:
-                # Error, these's already a build in progress.
-                raise LookupError('%s is already being built: %s'
-                                  % (link, fp.read()))
-        except IOError as e:
-            if e.errno != errno.ENOENT:
-                raise
-            assert req not in self._entries
-            with open(entry_path, 'w') as fp:
-                fp.write(info)
-            self._entries.add(req)
-            logger.debug('Added %s to build tracker %r', req, self._root)
-
-    def remove(self, req):
-        # type: (InstallRequirement) -> None
-        link = req.link
-        self._entries.remove(req)
-        os.unlink(self._entry_path(link))
-        logger.debug('Removed %s from build tracker %r', req, self._root)
-
-    def cleanup(self):
-        # type: () -> None
-        for req in set(self._entries):
-            self.remove(req)
-        remove = self._temp_dir is not None
-        if remove:
-            self._temp_dir.cleanup()
-        logger.debug('%s build tracker %r',
-                     'Removed' if remove else 'Cleaned',
-                     self._root)
-
-    @contextlib.contextmanager
-    def track(self, req):
-        # type: (InstallRequirement) -> Iterator[None]
-        self.add(req)
-        yield
-        self.remove(req)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/req/req_uninstall.py

@@ -1,596 +0,0 @@
-from __future__ import absolute_import
-
-import csv
-import functools
-import logging
-import os
-import sys
-import sysconfig
-
-from pip._vendor import pkg_resources
-
-from pip._internal.exceptions import UninstallationError
-from pip._internal.locations import bin_py, bin_user
-from pip._internal.utils.compat import WINDOWS, cache_from_source, uses_pycache
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import (
-    FakeFile, ask, dist_in_usersite, dist_is_local, egg_link_path, is_local,
-    normalize_path, renames, rmtree,
-)
-from pip._internal.utils.temp_dir import AdjacentTempDirectory, TempDirectory
-
-logger = logging.getLogger(__name__)
-
-
-def _script_names(dist, script_name, is_gui):
-    """Create the fully qualified name of the files created by
-    {console,gui}_scripts for the given ``dist``.
-    Returns the list of file names
-    """
-    if dist_in_usersite(dist):
-        bin_dir = bin_user
-    else:
-        bin_dir = bin_py
-    exe_name = os.path.join(bin_dir, script_name)
-    paths_to_remove = [exe_name]
-    if WINDOWS:
-        paths_to_remove.append(exe_name + '.exe')
-        paths_to_remove.append(exe_name + '.exe.manifest')
-        if is_gui:
-            paths_to_remove.append(exe_name + '-script.pyw')
-        else:
-            paths_to_remove.append(exe_name + '-script.py')
-    return paths_to_remove
-
-
-def _unique(fn):
-    @functools.wraps(fn)
-    def unique(*args, **kw):
-        seen = set()
-        for item in fn(*args, **kw):
-            if item not in seen:
-                seen.add(item)
-                yield item
-    return unique
-
-
-@_unique
-def uninstallation_paths(dist):
-    """
-    Yield all the uninstallation paths for dist based on RECORD-without-.py[co]
-
-    Yield paths to all the files in RECORD. For each .py file in RECORD, add
-    the .pyc and .pyo in the same directory.
-
-    UninstallPathSet.add() takes care of the __pycache__ .py[co].
-    """
-    r = csv.reader(FakeFile(dist.get_metadata_lines('RECORD')))
-    for row in r:
-        path = os.path.join(dist.location, row[0])
-        yield path
-        if path.endswith('.py'):
-            dn, fn = os.path.split(path)
-            base = fn[:-3]
-            path = os.path.join(dn, base + '.pyc')
-            yield path
-            path = os.path.join(dn, base + '.pyo')
-            yield path
-
-
-def compact(paths):
-    """Compact a path set to contain the minimal number of paths
-    necessary to contain all paths in the set. If /a/path/ and
-    /a/path/to/a/file.txt are both in the set, leave only the
-    shorter path."""
-
-    sep = os.path.sep
-    short_paths = set()
-    for path in sorted(paths, key=len):
-        should_skip = any(
-            path.startswith(shortpath.rstrip("*")) and
-            path[len(shortpath.rstrip("*").rstrip(sep))] == sep
-            for shortpath in short_paths
-        )
-        if not should_skip:
-            short_paths.add(path)
-    return short_paths
-
-
-def compress_for_rename(paths):
-    """Returns a set containing the paths that need to be renamed.
-
-    This set may include directories when the original sequence of paths
-    included every file on disk.
-    """
-    case_map = dict((os.path.normcase(p), p) for p in paths)
-    remaining = set(case_map)
-    unchecked = sorted(set(os.path.split(p)[0]
-                           for p in case_map.values()), key=len)
-    wildcards = set()
-
-    def norm_join(*a):
-        return os.path.normcase(os.path.join(*a))
-
-    for root in unchecked:
-        if any(os.path.normcase(root).startswith(w)
-               for w in wildcards):
-            # This directory has already been handled.
-            continue
-
-        all_files = set()
-        all_subdirs = set()
-        for dirname, subdirs, files in os.walk(root):
-            all_subdirs.update(norm_join(root, dirname, d)
-                               for d in subdirs)
-            all_files.update(norm_join(root, dirname, f)
-                             for f in files)
-        # If all the files we found are in our remaining set of files to
-        # remove, then remove them from the latter set and add a wildcard
-        # for the directory.
-        if not (all_files - remaining):
-            remaining.difference_update(all_files)
-            wildcards.add(root + os.sep)
-
-    return set(map(case_map.__getitem__, remaining)) | wildcards
-
-
-def compress_for_output_listing(paths):
-    """Returns a tuple of 2 sets of which paths to display to user
-
-    The first set contains paths that would be deleted. Files of a package
-    are not added and the top-level directory of the package has a '*' added
-    at the end - to signify that all it's contents are removed.
-
-    The second set contains files that would have been skipped in the above
-    folders.
-    """
-
-    will_remove = list(paths)
-    will_skip = set()
-
-    # Determine folders and files
-    folders = set()
-    files = set()
-    for path in will_remove:
-        if path.endswith(".pyc"):
-            continue
-        if path.endswith("__init__.py") or ".dist-info" in path:
-            folders.add(os.path.dirname(path))
-        files.add(path)
-
-    _normcased_files = set(map(os.path.normcase, files))
-
-    folders = compact(folders)
-
-    # This walks the tree using os.walk to not miss extra folders
-    # that might get added.
-    for folder in folders:
-        for dirpath, _, dirfiles in os.walk(folder):
-            for fname in dirfiles:
-                if fname.endswith(".pyc"):
-                    continue
-
-                file_ = os.path.join(dirpath, fname)
-                if (os.path.isfile(file_) and
-                        os.path.normcase(file_) not in _normcased_files):
-                    # We are skipping this file. Add it to the set.
-                    will_skip.add(file_)
-
-    will_remove = files | {
-        os.path.join(folder, "*") for folder in folders
-    }
-
-    return will_remove, will_skip
-
-
-class StashedUninstallPathSet(object):
-    """A set of file rename operations to stash files while
-    tentatively uninstalling them."""
-    def __init__(self):
-        # Mapping from source file root to [Adjacent]TempDirectory
-        # for files under that directory.
-        self._save_dirs = {}
-        # (old path, new path) tuples for each move that may need
-        # to be undone.
-        self._moves = []
-
-    def _get_directory_stash(self, path):
-        """Stashes a directory.
-
-        Directories are stashed adjacent to their original location if
-        possible, or else moved/copied into the user's temp dir."""
-
-        try:
-            save_dir = AdjacentTempDirectory(path)
-            save_dir.create()
-        except OSError:
-            save_dir = TempDirectory(kind="uninstall")
-            save_dir.create()
-        self._save_dirs[os.path.normcase(path)] = save_dir
-
-        return save_dir.path
-
-    def _get_file_stash(self, path):
-        """Stashes a file.
-
-        If no root has been provided, one will be created for the directory
-        in the user's temp directory."""
-        path = os.path.normcase(path)
-        head, old_head = os.path.dirname(path), None
-        save_dir = None
-
-        while head != old_head:
-            try:
-                save_dir = self._save_dirs[head]
-                break
-            except KeyError:
-                pass
-            head, old_head = os.path.dirname(head), head
-        else:
-            # Did not find any suitable root
-            head = os.path.dirname(path)
-            save_dir = TempDirectory(kind='uninstall')
-            save_dir.create()
-            self._save_dirs[head] = save_dir
-
-        relpath = os.path.relpath(path, head)
-        if relpath and relpath != os.path.curdir:
-            return os.path.join(save_dir.path, relpath)
-        return save_dir.path
-
-    def stash(self, path):
-        """Stashes the directory or file and returns its new location.
-        """
-        if os.path.isdir(path):
-            new_path = self._get_directory_stash(path)
-        else:
-            new_path = self._get_file_stash(path)
-
-        self._moves.append((path, new_path))
-        if os.path.isdir(path) and os.path.isdir(new_path):
-            # If we're moving a directory, we need to
-            # remove the destination first or else it will be
-            # moved to inside the existing directory.
-            # We just created new_path ourselves, so it will
-            # be removable.
-            os.rmdir(new_path)
-        renames(path, new_path)
-        return new_path
-
-    def commit(self):
-        """Commits the uninstall by removing stashed files."""
-        for _, save_dir in self._save_dirs.items():
-            save_dir.cleanup()
-        self._moves = []
-        self._save_dirs = {}
-
-    def rollback(self):
-        """Undoes the uninstall by moving stashed files back."""
-        for p in self._moves:
-            logging.info("Moving to %s\n from %s", *p)
-
-        for new_path, path in self._moves:
-            try:
-                logger.debug('Replacing %s from %s', new_path, path)
-                if os.path.isfile(new_path):
-                    os.unlink(new_path)
-                elif os.path.isdir(new_path):
-                    rmtree(new_path)
-                renames(path, new_path)
-            except OSError as ex:
-                logger.error("Failed to restore %s", new_path)
-                logger.debug("Exception: %s", ex)
-
-        self.commit()
-
-    @property
-    def can_rollback(self):
-        return bool(self._moves)
-
-
-class UninstallPathSet(object):
-    """A set of file paths to be removed in the uninstallation of a
-    requirement."""
-    def __init__(self, dist):
-        self.paths = set()
-        self._refuse = set()
-        self.pth = {}
-        self.dist = dist
-        self._moved_paths = StashedUninstallPathSet()
-
-    def _permitted(self, path):
-        """
-        Return True if the given path is one we are permitted to
-        remove/modify, False otherwise.
-
-        """
-        return is_local(path)
-
-    def add(self, path):
-        head, tail = os.path.split(path)
-
-        # we normalize the head to resolve parent directory symlinks, but not
-        # the tail, since we only want to uninstall symlinks, not their targets
-        path = os.path.join(normalize_path(head), os.path.normcase(tail))
-
-        if not os.path.exists(path):
-            return
-        if self._permitted(path):
-            self.paths.add(path)
-        else:
-            self._refuse.add(path)
-
-        # __pycache__ files can show up after 'installed-files.txt' is created,
-        # due to imports
-        if os.path.splitext(path)[1] == '.py' and uses_pycache:
-            self.add(cache_from_source(path))
-
-    def add_pth(self, pth_file, entry):
-        pth_file = normalize_path(pth_file)
-        if self._permitted(pth_file):
-            if pth_file not in self.pth:
-                self.pth[pth_file] = UninstallPthEntries(pth_file)
-            self.pth[pth_file].add(entry)
-        else:
-            self._refuse.add(pth_file)
-
-    def remove(self, auto_confirm=False, verbose=False):
-        """Remove paths in ``self.paths`` with confirmation (unless
-        ``auto_confirm`` is True)."""
-
-        if not self.paths:
-            logger.info(
-                "Can't uninstall '%s'. No files were found to uninstall.",
-                self.dist.project_name,
-            )
-            return
-
-        dist_name_version = (
-            self.dist.project_name + "-" + self.dist.version
-        )
-        logger.info('Uninstalling %s:', dist_name_version)
-
-        with indent_log():
-            if auto_confirm or self._allowed_to_proceed(verbose):
-                moved = self._moved_paths
-
-                for_rename = compress_for_rename(self.paths)
-
-                for path in sorted(compact(for_rename)):
-                    moved.stash(path)
-                    logger.debug('Removing file or directory %s', path)
-
-                for pth in self.pth.values():
-                    pth.remove()
-
-                logger.info('Successfully uninstalled %s', dist_name_version)
-
-    def _allowed_to_proceed(self, verbose):
-        """Display which files would be deleted and prompt for confirmation
-        """
-
-        def _display(msg, paths):
-            if not paths:
-                return
-
-            logger.info(msg)
-            with indent_log():
-                for path in sorted(compact(paths)):
-                    logger.info(path)
-
-        if not verbose:
-            will_remove, will_skip = compress_for_output_listing(self.paths)
-        else:
-            # In verbose mode, display all the files that are going to be
-            # deleted.
-            will_remove = list(self.paths)
-            will_skip = set()
-
-        _display('Would remove:', will_remove)
-        _display('Would not remove (might be manually added):', will_skip)
-        _display('Would not remove (outside of prefix):', self._refuse)
-        if verbose:
-            _display('Will actually move:', compress_for_rename(self.paths))
-
-        return ask('Proceed (y/n)? ', ('y', 'n')) == 'y'
-
-    def rollback(self):
-        """Rollback the changes previously made by remove()."""
-        if not self._moved_paths.can_rollback:
-            logger.error(
-                "Can't roll back %s; was not uninstalled",
-                self.dist.project_name,
-            )
-            return False
-        logger.info('Rolling back uninstall of %s', self.dist.project_name)
-        self._moved_paths.rollback()
-        for pth in self.pth.values():
-            pth.rollback()
-
-    def commit(self):
-        """Remove temporary save dir: rollback will no longer be possible."""
-        self._moved_paths.commit()
-
-    @classmethod
-    def from_dist(cls, dist):
-        dist_path = normalize_path(dist.location)
-        if not dist_is_local(dist):
-            logger.info(
-                "Not uninstalling %s at %s, outside environment %s",
-                dist.key,
-                dist_path,
-                sys.prefix,
-            )
-            return cls(dist)
-
-        if dist_path in {p for p in {sysconfig.get_path("stdlib"),
-                                     sysconfig.get_path("platstdlib")}
-                         if p}:
-            logger.info(
-                "Not uninstalling %s at %s, as it is in the standard library.",
-                dist.key,
-                dist_path,
-            )
-            return cls(dist)
-
-        paths_to_remove = cls(dist)
-        develop_egg_link = egg_link_path(dist)
-        develop_egg_link_egg_info = '{}.egg-info'.format(
-            pkg_resources.to_filename(dist.project_name))
-        egg_info_exists = dist.egg_info and os.path.exists(dist.egg_info)
-        # Special case for distutils installed package
-        distutils_egg_info = getattr(dist._provider, 'path', None)
-
-        # Uninstall cases order do matter as in the case of 2 installs of the
-        # same package, pip needs to uninstall the currently detected version
-        if (egg_info_exists and dist.egg_info.endswith('.egg-info') and
-                not dist.egg_info.endswith(develop_egg_link_egg_info)):
-            # if dist.egg_info.endswith(develop_egg_link_egg_info), we
-            # are in fact in the develop_egg_link case
-            paths_to_remove.add(dist.egg_info)
-            if dist.has_metadata('installed-files.txt'):
-                for installed_file in dist.get_metadata(
-                        'installed-files.txt').splitlines():
-                    path = os.path.normpath(
-                        os.path.join(dist.egg_info, installed_file)
-                    )
-                    paths_to_remove.add(path)
-            # FIXME: need a test for this elif block
-            # occurs with --single-version-externally-managed/--record outside
-            # of pip
-            elif dist.has_metadata('top_level.txt'):
-                if dist.has_metadata('namespace_packages.txt'):
-                    namespaces = dist.get_metadata('namespace_packages.txt')
-                else:
-                    namespaces = []
-                for top_level_pkg in [
-                        p for p
-                        in dist.get_metadata('top_level.txt').splitlines()
-                        if p and p not in namespaces]:
-                    path = os.path.join(dist.location, top_level_pkg)
-                    paths_to_remove.add(path)
-                    paths_to_remove.add(path + '.py')
-                    paths_to_remove.add(path + '.pyc')
-                    paths_to_remove.add(path + '.pyo')
-
-        elif distutils_egg_info:
-            raise UninstallationError(
-                "Cannot uninstall {!r}. It is a distutils installed project "
-                "and thus we cannot accurately determine which files belong "
-                "to it which would lead to only a partial uninstall.".format(
-                    dist.project_name,
-                )
-            )
-
-        elif dist.location.endswith('.egg'):
-            # package installed by easy_install
-            # We cannot match on dist.egg_name because it can slightly vary
-            # i.e. setuptools-0.6c11-py2.6.egg vs setuptools-0.6rc11-py2.6.egg
-            paths_to_remove.add(dist.location)
-            easy_install_egg = os.path.split(dist.location)[1]
-            easy_install_pth = os.path.join(os.path.dirname(dist.location),
-                                            'easy-install.pth')
-            paths_to_remove.add_pth(easy_install_pth, './' + easy_install_egg)
-
-        elif egg_info_exists and dist.egg_info.endswith('.dist-info'):
-            for path in uninstallation_paths(dist):
-                paths_to_remove.add(path)
-
-        elif develop_egg_link:
-            # develop egg
-            with open(develop_egg_link, 'r') as fh:
-                link_pointer = os.path.normcase(fh.readline().strip())
-            assert (link_pointer == dist.location), (
-                'Egg-link %s does not match installed location of %s '
-                '(at %s)' % (link_pointer, dist.project_name, dist.location)
-            )
-            paths_to_remove.add(develop_egg_link)
-            easy_install_pth = os.path.join(os.path.dirname(develop_egg_link),
-                                            'easy-install.pth')
-            paths_to_remove.add_pth(easy_install_pth, dist.location)
-
-        else:
-            logger.debug(
-                'Not sure how to uninstall: %s - Check: %s',
-                dist, dist.location,
-            )
-
-        # find distutils scripts= scripts
-        if dist.has_metadata('scripts') and dist.metadata_isdir('scripts'):
-            for script in dist.metadata_listdir('scripts'):
-                if dist_in_usersite(dist):
-                    bin_dir = bin_user
-                else:
-                    bin_dir = bin_py
-                paths_to_remove.add(os.path.join(bin_dir, script))
-                if WINDOWS:
-                    paths_to_remove.add(os.path.join(bin_dir, script) + '.bat')
-
-        # find console_scripts
-        _scripts_to_remove = []
-        console_scripts = dist.get_entry_map(group='console_scripts')
-        for name in console_scripts.keys():
-            _scripts_to_remove.extend(_script_names(dist, name, False))
-        # find gui_scripts
-        gui_scripts = dist.get_entry_map(group='gui_scripts')
-        for name in gui_scripts.keys():
-            _scripts_to_remove.extend(_script_names(dist, name, True))
-
-        for s in _scripts_to_remove:
-            paths_to_remove.add(s)
-
-        return paths_to_remove
-
-
-class UninstallPthEntries(object):
-    def __init__(self, pth_file):
-        if not os.path.isfile(pth_file):
-            raise UninstallationError(
-                "Cannot remove entries from nonexistent file %s" % pth_file
-            )
-        self.file = pth_file
-        self.entries = set()
-        self._saved_lines = None
-
-    def add(self, entry):
-        entry = os.path.normcase(entry)
-        # On Windows, os.path.normcase converts the entry to use
-        # backslashes.  This is correct for entries that describe absolute
-        # paths outside of site-packages, but all the others use forward
-        # slashes.
-        if WINDOWS and not os.path.splitdrive(entry)[0]:
-            entry = entry.replace('\\', '/')
-        self.entries.add(entry)
-
-    def remove(self):
-        logger.debug('Removing pth entries from %s:', self.file)
-        with open(self.file, 'rb') as fh:
-            # windows uses '\r\n' with py3k, but uses '\n' with py2.x
-            lines = fh.readlines()
-            self._saved_lines = lines
-        if any(b'\r\n' in line for line in lines):
-            endline = '\r\n'
-        else:
-            endline = '\n'
-        # handle missing trailing newline
-        if lines and not lines[-1].endswith(endline.encode("utf-8")):
-            lines[-1] = lines[-1] + endline.encode("utf-8")
-        for entry in self.entries:
-            try:
-                logger.debug('Removing entry: %s', entry)
-                lines.remove((entry + endline).encode("utf-8"))
-            except ValueError:
-                pass
-        with open(self.file, 'wb') as fh:
-            fh.writelines(lines)
-
-    def rollback(self):
-        if self._saved_lines is None:
-            logger.error(
-                'Cannot roll back changes to %s, none were made', self.file
-            )
-            return False
-        logger.debug('Rolling %s back to previous state', self.file)
-        with open(self.file, 'wb') as fh:
-            fh.writelines(self._saved_lines)
-        return True

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/resolve.py

@@ -1,393 +0,0 @@
-"""Dependency Resolution
-
-The dependency resolution in pip is performed as follows:
-
-for top-level requirements:
-    a. only one spec allowed per project, regardless of conflicts or not.
-       otherwise a "double requirement" exception is raised
-    b. they override sub-dependency requirements.
-for sub-dependencies
-    a. "first found, wins" (where the order is breadth first)
-"""
-
-import logging
-from collections import defaultdict
-from itertools import chain
-
-from pip._internal.exceptions import (
-    BestVersionAlreadyInstalled, DistributionNotFound, HashError, HashErrors,
-    UnsupportedPythonVersion,
-)
-from pip._internal.req.constructors import install_req_from_req_string
-from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import dist_in_usersite, ensure_dir
-from pip._internal.utils.packaging import check_dist_requires_python
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, DefaultDict, List, Set  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-    from pip._internal.req.req_install import InstallRequirement  # noqa: F401
-    from pip._internal.index import PackageFinder  # noqa: F401
-    from pip._internal.req.req_set import RequirementSet  # noqa: F401
-    from pip._internal.operations.prepare import (  # noqa: F401
-        DistAbstraction, RequirementPreparer
-    )
-    from pip._internal.cache import WheelCache  # noqa: F401
-
-logger = logging.getLogger(__name__)
-
-
-class Resolver(object):
-    """Resolves which packages need to be installed/uninstalled to perform \
-    the requested operation without breaking the requirements of any package.
-    """
-
-    _allowed_strategies = {"eager", "only-if-needed", "to-satisfy-only"}
-
-    def __init__(
-        self,
-        preparer,  # type: RequirementPreparer
-        session,  # type: PipSession
-        finder,  # type: PackageFinder
-        wheel_cache,  # type: Optional[WheelCache]
-        use_user_site,  # type: bool
-        ignore_dependencies,  # type: bool
-        ignore_installed,  # type: bool
-        ignore_requires_python,  # type: bool
-        force_reinstall,  # type: bool
-        isolated,  # type: bool
-        upgrade_strategy,  # type: str
-        use_pep517=None  # type: Optional[bool]
-    ):
-        # type: (...) -> None
-        super(Resolver, self).__init__()
-        assert upgrade_strategy in self._allowed_strategies
-
-        self.preparer = preparer
-        self.finder = finder
-        self.session = session
-
-        # NOTE: This would eventually be replaced with a cache that can give
-        #       information about both sdist and wheels transparently.
-        self.wheel_cache = wheel_cache
-
-        # This is set in resolve
-        self.require_hashes = None  # type: Optional[bool]
-
-        self.upgrade_strategy = upgrade_strategy
-        self.force_reinstall = force_reinstall
-        self.isolated = isolated
-        self.ignore_dependencies = ignore_dependencies
-        self.ignore_installed = ignore_installed
-        self.ignore_requires_python = ignore_requires_python
-        self.use_user_site = use_user_site
-        self.use_pep517 = use_pep517
-
-        self._discovered_dependencies = \
-            defaultdict(list)  # type: DefaultDict[str, List]
-
-    def resolve(self, requirement_set):
-        # type: (RequirementSet) -> None
-        """Resolve what operations need to be done
-
-        As a side-effect of this method, the packages (and their dependencies)
-        are downloaded, unpacked and prepared for installation. This
-        preparation is done by ``pip.operations.prepare``.
-
-        Once PyPI has static dependency metadata available, it would be
-        possible to move the preparation to become a step separated from
-        dependency resolution.
-        """
-        # make the wheelhouse
-        if self.preparer.wheel_download_dir:
-            ensure_dir(self.preparer.wheel_download_dir)
-
-        # If any top-level requirement has a hash specified, enter
-        # hash-checking mode, which requires hashes from all.
-        root_reqs = (
-            requirement_set.unnamed_requirements +
-            list(requirement_set.requirements.values())
-        )
-        self.require_hashes = (
-            requirement_set.require_hashes or
-            any(req.has_hash_options for req in root_reqs)
-        )
-
-        # Display where finder is looking for packages
-        locations = self.finder.get_formatted_locations()
-        if locations:
-            logger.info(locations)
-
-        # Actually prepare the files, and collect any exceptions. Most hash
-        # exceptions cannot be checked ahead of time, because
-        # req.populate_link() needs to be called before we can make decisions
-        # based on link type.
-        discovered_reqs = []  # type: List[InstallRequirement]
-        hash_errors = HashErrors()
-        for req in chain(root_reqs, discovered_reqs):
-            try:
-                discovered_reqs.extend(
-                    self._resolve_one(requirement_set, req)
-                )
-            except HashError as exc:
-                exc.req = req
-                hash_errors.append(exc)
-
-        if hash_errors:
-            raise hash_errors
-
-    def _is_upgrade_allowed(self, req):
-        # type: (InstallRequirement) -> bool
-        if self.upgrade_strategy == "to-satisfy-only":
-            return False
-        elif self.upgrade_strategy == "eager":
-            return True
-        else:
-            assert self.upgrade_strategy == "only-if-needed"
-            return req.is_direct
-
-    def _set_req_to_reinstall(self, req):
-        # type: (InstallRequirement) -> None
-        """
-        Set a requirement to be installed.
-        """
-        # Don't uninstall the conflict if doing a user install and the
-        # conflict is not a user install.
-        if not self.use_user_site or dist_in_usersite(req.satisfied_by):
-            req.conflicts_with = req.satisfied_by
-        req.satisfied_by = None
-
-    # XXX: Stop passing requirement_set for options
-    def _check_skip_installed(self, req_to_install):
-        # type: (InstallRequirement) -> Optional[str]
-        """Check if req_to_install should be skipped.
-
-        This will check if the req is installed, and whether we should upgrade
-        or reinstall it, taking into account all the relevant user options.
-
-        After calling this req_to_install will only have satisfied_by set to
-        None if the req_to_install is to be upgraded/reinstalled etc. Any
-        other value will be a dist recording the current thing installed that
-        satisfies the requirement.
-
-        Note that for vcs urls and the like we can't assess skipping in this
-        routine - we simply identify that we need to pull the thing down,
-        then later on it is pulled down and introspected to assess upgrade/
-        reinstalls etc.
-
-        :return: A text reason for why it was skipped, or None.
-        """
-        if self.ignore_installed:
-            return None
-
-        req_to_install.check_if_exists(self.use_user_site)
-        if not req_to_install.satisfied_by:
-            return None
-
-        if self.force_reinstall:
-            self._set_req_to_reinstall(req_to_install)
-            return None
-
-        if not self._is_upgrade_allowed(req_to_install):
-            if self.upgrade_strategy == "only-if-needed":
-                return 'already satisfied, skipping upgrade'
-            return 'already satisfied'
-
-        # Check for the possibility of an upgrade.  For link-based
-        # requirements we have to pull the tree down and inspect to assess
-        # the version #, so it's handled way down.
-        if not req_to_install.link:
-            try:
-                self.finder.find_requirement(req_to_install, upgrade=True)
-            except BestVersionAlreadyInstalled:
-                # Then the best version is installed.
-                return 'already up-to-date'
-            except DistributionNotFound:
-                # No distribution found, so we squash the error.  It will
-                # be raised later when we re-try later to do the install.
-                # Why don't we just raise here?
-                pass
-
-        self._set_req_to_reinstall(req_to_install)
-        return None
-
-    def _get_abstract_dist_for(self, req):
-        # type: (InstallRequirement) -> DistAbstraction
-        """Takes a InstallRequirement and returns a single AbstractDist \
-        representing a prepared variant of the same.
-        """
-        assert self.require_hashes is not None, (
-            "require_hashes should have been set in Resolver.resolve()"
-        )
-
-        if req.editable:
-            return self.preparer.prepare_editable_requirement(
-                req, self.require_hashes, self.use_user_site, self.finder,
-            )
-
-        # satisfied_by is only evaluated by calling _check_skip_installed,
-        # so it must be None here.
-        assert req.satisfied_by is None
-        skip_reason = self._check_skip_installed(req)
-
-        if req.satisfied_by:
-            return self.preparer.prepare_installed_requirement(
-                req, self.require_hashes, skip_reason
-            )
-
-        upgrade_allowed = self._is_upgrade_allowed(req)
-        abstract_dist = self.preparer.prepare_linked_requirement(
-            req, self.session, self.finder, upgrade_allowed,
-            self.require_hashes
-        )
-
-        # NOTE
-        # The following portion is for determining if a certain package is
-        # going to be re-installed/upgraded or not and reporting to the user.
-        # This should probably get cleaned up in a future refactor.
-
-        # req.req is only avail after unpack for URL
-        # pkgs repeat check_if_exists to uninstall-on-upgrade
-        # (#14)
-        if not self.ignore_installed:
-            req.check_if_exists(self.use_user_site)
-
-        if req.satisfied_by:
-            should_modify = (
-                self.upgrade_strategy != "to-satisfy-only" or
-                self.force_reinstall or
-                self.ignore_installed or
-                req.link.scheme == 'file'
-            )
-            if should_modify:
-                self._set_req_to_reinstall(req)
-            else:
-                logger.info(
-                    'Requirement already satisfied (use --upgrade to upgrade):'
-                    ' %s', req,
-                )
-
-        return abstract_dist
-
-    def _resolve_one(
-        self,
-        requirement_set,  # type: RequirementSet
-        req_to_install  # type: InstallRequirement
-    ):
-        # type: (...) -> List[InstallRequirement]
-        """Prepare a single requirements file.
-
-        :return: A list of additional InstallRequirements to also install.
-        """
-        # Tell user what we are doing for this requirement:
-        # obtain (editable), skipping, processing (local url), collecting
-        # (remote url or package name)
-        if req_to_install.constraint or req_to_install.prepared:
-            return []
-
-        req_to_install.prepared = True
-
-        # register tmp src for cleanup in case something goes wrong
-        requirement_set.reqs_to_cleanup.append(req_to_install)
-
-        abstract_dist = self._get_abstract_dist_for(req_to_install)
-
-        # Parse and return dependencies
-        dist = abstract_dist.dist()
-        try:
-            check_dist_requires_python(dist)
-        except UnsupportedPythonVersion as err:
-            if self.ignore_requires_python:
-                logger.warning(err.args[0])
-            else:
-                raise
-
-        more_reqs = []  # type: List[InstallRequirement]
-
-        def add_req(subreq, extras_requested):
-            sub_install_req = install_req_from_req_string(
-                str(subreq),
-                req_to_install,
-                isolated=self.isolated,
-                wheel_cache=self.wheel_cache,
-                use_pep517=self.use_pep517
-            )
-            parent_req_name = req_to_install.name
-            to_scan_again, add_to_parent = requirement_set.add_requirement(
-                sub_install_req,
-                parent_req_name=parent_req_name,
-                extras_requested=extras_requested,
-            )
-            if parent_req_name and add_to_parent:
-                self._discovered_dependencies[parent_req_name].append(
-                    add_to_parent
-                )
-            more_reqs.extend(to_scan_again)
-
-        with indent_log():
-            # We add req_to_install before its dependencies, so that we
-            # can refer to it when adding dependencies.
-            if not requirement_set.has_requirement(req_to_install.name):
-                # 'unnamed' requirements will get added here
-                req_to_install.is_direct = True
-                requirement_set.add_requirement(
-                    req_to_install, parent_req_name=None,
-                )
-
-            if not self.ignore_dependencies:
-                if req_to_install.extras:
-                    logger.debug(
-                        "Installing extra requirements: %r",
-                        ','.join(req_to_install.extras),
-                    )
-                missing_requested = sorted(
-                    set(req_to_install.extras) - set(dist.extras)
-                )
-                for missing in missing_requested:
-                    logger.warning(
-                        '%s does not provide the extra \'%s\'',
-                        dist, missing
-                    )
-
-                available_requested = sorted(
-                    set(dist.extras) & set(req_to_install.extras)
-                )
-                for subreq in dist.requires(available_requested):
-                    add_req(subreq, extras_requested=available_requested)
-
-            if not req_to_install.editable and not req_to_install.satisfied_by:
-                # XXX: --no-install leads this to report 'Successfully
-                # downloaded' for only non-editable reqs, even though we took
-                # action on them.
-                requirement_set.successfully_downloaded.append(req_to_install)
-
-        return more_reqs
-
-    def get_installation_order(self, req_set):
-        # type: (RequirementSet) -> List[InstallRequirement]
-        """Create the installation order.
-
-        The installation order is topological - requirements are installed
-        before the requiring thing. We break cycles at an arbitrary point,
-        and make no other guarantees.
-        """
-        # The current implementation, which we may change at any point
-        # installs the user specified things in the order given, except when
-        # dependencies must come earlier to achieve topological order.
-        order = []
-        ordered_reqs = set()  # type: Set[InstallRequirement]
-
-        def schedule(req):
-            if req.satisfied_by or req in ordered_reqs:
-                return
-            if req.constraint:
-                return
-            ordered_reqs.add(req)
-            for dep in self._discovered_dependencies[req.name]:
-                schedule(dep)
-            order.append(req)
-
-        for install_req in req_set.requirements.values():
-            schedule(install_req)
-        return order

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/appdirs.py

@@ -1,270 +0,0 @@
-"""
-This code was taken from https://github.com/ActiveState/appdirs and modified
-to suit our purposes.
-"""
-from __future__ import absolute_import
-
-import os
-import sys
-
-from pip._vendor.six import PY2, text_type
-
-from pip._internal.utils.compat import WINDOWS, expanduser
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        List, Union
-    )
-
-
-def user_cache_dir(appname):
-    # type: (str) -> str
-    r"""
-    Return full path to the user-specific cache dir for this application.
-
-        "appname" is the name of application.
-
-    Typical user cache directories are:
-        macOS:      ~/Library/Caches/<AppName>
-        Unix:       ~/.cache/<AppName> (XDG default)
-        Windows:    C:\Users\<username>\AppData\Local\<AppName>\Cache
-
-    On Windows the only suggestion in the MSDN docs is that local settings go
-    in the `CSIDL_LOCAL_APPDATA` directory. This is identical to the
-    non-roaming app data dir (the default returned by `user_data_dir`). Apps
-    typically put cache data somewhere *under* the given dir here. Some
-    examples:
-        ...\Mozilla\Firefox\Profiles\<ProfileName>\Cache
-        ...\Acme\SuperApp\Cache\1.0
-
-    OPINION: This function appends "Cache" to the `CSIDL_LOCAL_APPDATA` value.
-    """
-    if WINDOWS:
-        # Get the base path
-        path = os.path.normpath(_get_win_folder("CSIDL_LOCAL_APPDATA"))
-
-        # When using Python 2, return paths as bytes on Windows like we do on
-        # other operating systems. See helper function docs for more details.
-        if PY2 and isinstance(path, text_type):
-            path = _win_path_to_bytes(path)
-
-        # Add our app name and Cache directory to it
-        path = os.path.join(path, appname, "Cache")
-    elif sys.platform == "darwin":
-        # Get the base path
-        path = expanduser("~/Library/Caches")
-
-        # Add our app name to it
-        path = os.path.join(path, appname)
-    else:
-        # Get the base path
-        path = os.getenv("XDG_CACHE_HOME", expanduser("~/.cache"))
-
-        # Add our app name to it
-        path = os.path.join(path, appname)
-
-    return path
-
-
-def user_data_dir(appname, roaming=False):
-    # type: (str, bool) -> str
-    r"""
-    Return full path to the user-specific data dir for this application.
-
-        "appname" is the name of application.
-            If None, just the system directory is returned.
-        "roaming" (boolean, default False) can be set True to use the Windows
-            roaming appdata directory. That means that for users on a Windows
-            network setup for roaming profiles, this user data will be
-            sync'd on login. See
-            <http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx>
-            for a discussion of issues.
-
-    Typical user data directories are:
-        macOS:                  ~/Library/Application Support/<AppName>
-                                if it exists, else ~/.config/<AppName>
-        Unix:                   ~/.local/share/<AppName>    # or in
-                                $XDG_DATA_HOME, if defined
-        Win XP (not roaming):   C:\Documents and Settings\<username>\ ...
-                                ...Application Data\<AppName>
-        Win XP (roaming):       C:\Documents and Settings\<username>\Local ...
-                                ...Settings\Application Data\<AppName>
-        Win 7  (not roaming):   C:\\Users\<username>\AppData\Local\<AppName>
-        Win 7  (roaming):       C:\\Users\<username>\AppData\Roaming\<AppName>
-
-    For Unix, we follow the XDG spec and support $XDG_DATA_HOME.
-    That means, by default "~/.local/share/<AppName>".
-    """
-    if WINDOWS:
-        const = roaming and "CSIDL_APPDATA" or "CSIDL_LOCAL_APPDATA"
-        path = os.path.join(os.path.normpath(_get_win_folder(const)), appname)
-    elif sys.platform == "darwin":
-        path = os.path.join(
-            expanduser('~/Library/Application Support/'),
-            appname,
-        ) if os.path.isdir(os.path.join(
-            expanduser('~/Library/Application Support/'),
-            appname,
-        )
-        ) else os.path.join(
-            expanduser('~/.config/'),
-            appname,
-        )
-    else:
-        path = os.path.join(
-            os.getenv('XDG_DATA_HOME', expanduser("~/.local/share")),
-            appname,
-        )
-
-    return path
-
-
-def user_config_dir(appname, roaming=True):
-    # type: (str, bool) -> str
-    """Return full path to the user-specific config dir for this application.
-
-        "appname" is the name of application.
-            If None, just the system directory is returned.
-        "roaming" (boolean, default True) can be set False to not use the
-            Windows roaming appdata directory. That means that for users on a
-            Windows network setup for roaming profiles, this user data will be
-            sync'd on login. See
-            <http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx>
-            for a discussion of issues.
-
-    Typical user data directories are:
-        macOS:                  same as user_data_dir
-        Unix:                   ~/.config/<AppName>
-        Win *:                  same as user_data_dir
-
-    For Unix, we follow the XDG spec and support $XDG_CONFIG_HOME.
-    That means, by default "~/.config/<AppName>".
-    """
-    if WINDOWS:
-        path = user_data_dir(appname, roaming=roaming)
-    elif sys.platform == "darwin":
-        path = user_data_dir(appname)
-    else:
-        path = os.getenv('XDG_CONFIG_HOME', expanduser("~/.config"))
-        path = os.path.join(path, appname)
-
-    return path
-
-
-# for the discussion regarding site_config_dirs locations
-# see <https://github.com/pypa/pip/issues/1733>
-def site_config_dirs(appname):
-    # type: (str) -> List[str]
-    r"""Return a list of potential user-shared config dirs for this application.
-
-        "appname" is the name of application.
-
-    Typical user config directories are:
-        macOS:      /Library/Application Support/<AppName>/
-        Unix:       /etc or $XDG_CONFIG_DIRS[i]/<AppName>/ for each value in
-                    $XDG_CONFIG_DIRS
-        Win XP:     C:\Documents and Settings\All Users\Application ...
-                    ...Data\<AppName>\
-        Vista:      (Fail! "C:\ProgramData" is a hidden *system* directory
-                    on Vista.)
-        Win 7:      Hidden, but writeable on Win 7:
-                    C:\ProgramData\<AppName>\
-    """
-    if WINDOWS:
-        path = os.path.normpath(_get_win_folder("CSIDL_COMMON_APPDATA"))
-        pathlist = [os.path.join(path, appname)]
-    elif sys.platform == 'darwin':
-        pathlist = [os.path.join('/Library/Application Support', appname)]
-    else:
-        # try looking in $XDG_CONFIG_DIRS
-        xdg_config_dirs = os.getenv('XDG_CONFIG_DIRS', '/etc/xdg')
-        if xdg_config_dirs:
-            pathlist = [
-                os.path.join(expanduser(x), appname)
-                for x in xdg_config_dirs.split(os.pathsep)
-            ]
-        else:
-            pathlist = []
-
-        # always look in /etc directly as well
-        pathlist.append('/etc')
-
-    return pathlist
-
-
-# -- Windows support functions --
-
-def _get_win_folder_from_registry(csidl_name):
-    # type: (str) -> str
-    """
-    This is a fallback technique at best. I'm not sure if using the
-    registry for this guarantees us the correct answer for all CSIDL_*
-    names.
-    """
-    import _winreg
-
-    shell_folder_name = {
-        "CSIDL_APPDATA": "AppData",
-        "CSIDL_COMMON_APPDATA": "Common AppData",
-        "CSIDL_LOCAL_APPDATA": "Local AppData",
-    }[csidl_name]
-
-    key = _winreg.OpenKey(
-        _winreg.HKEY_CURRENT_USER,
-        r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
-    )
-    directory, _type = _winreg.QueryValueEx(key, shell_folder_name)
-    return directory
-
-
-def _get_win_folder_with_ctypes(csidl_name):
-    # type: (str) -> str
-    csidl_const = {
-        "CSIDL_APPDATA": 26,
-        "CSIDL_COMMON_APPDATA": 35,
-        "CSIDL_LOCAL_APPDATA": 28,
-    }[csidl_name]
-
-    buf = ctypes.create_unicode_buffer(1024)
-    ctypes.windll.shell32.SHGetFolderPathW(None, csidl_const, None, 0, buf)
-
-    # Downgrade to short path name if have highbit chars. See
-    # <http://bugs.activestate.com/show_bug.cgi?id=85099>.
-    has_high_char = False
-    for c in buf:
-        if ord(c) > 255:
-            has_high_char = True
-            break
-    if has_high_char:
-        buf2 = ctypes.create_unicode_buffer(1024)
-        if ctypes.windll.kernel32.GetShortPathNameW(buf.value, buf2, 1024):
-            buf = buf2
-
-    return buf.value
-
-
-if WINDOWS:
-    try:
-        import ctypes
-        _get_win_folder = _get_win_folder_with_ctypes
-    except ImportError:
-        _get_win_folder = _get_win_folder_from_registry
-
-
-def _win_path_to_bytes(path):
-    """Encode Windows paths to bytes. Only used on Python 2.
-
-    Motivation is to be consistent with other operating systems where paths
-    are also returned as bytes. This avoids problems mixing bytes and Unicode
-    elsewhere in the codebase. For more details and discussion see
-    <https://github.com/pypa/pip/issues/3463>.
-
-    If encoding using ASCII and MBCS fails, return the original Unicode path.
-    """
-    for encoding in ('ASCII', 'MBCS'):
-        try:
-            return path.encode(encoding)
-        except (UnicodeEncodeError, LookupError):
-            pass
-    return path

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/compat.py

@@ -1,264 +0,0 @@
-"""Stuff that differs in different Python versions and platform
-distributions."""
-from __future__ import absolute_import, division
-
-import codecs
-import locale
-import logging
-import os
-import shutil
-import sys
-
-from pip._vendor.six import text_type
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Tuple, Text  # noqa: F401
-
-try:
-    import ipaddress
-except ImportError:
-    try:
-        from pip._vendor import ipaddress  # type: ignore
-    except ImportError:
-        import ipaddr as ipaddress  # type: ignore
-        ipaddress.ip_address = ipaddress.IPAddress  # type: ignore
-        ipaddress.ip_network = ipaddress.IPNetwork  # type: ignore
-
-
-__all__ = [
-    "ipaddress", "uses_pycache", "console_to_str", "native_str",
-    "get_path_uid", "stdlib_pkgs", "WINDOWS", "samefile", "get_terminal_size",
-    "get_extension_suffixes",
-]
-
-
-logger = logging.getLogger(__name__)
-
-if sys.version_info >= (3, 4):
-    uses_pycache = True
-    from importlib.util import cache_from_source
-else:
-    import imp
-
-    try:
-        cache_from_source = imp.cache_from_source  # type: ignore
-    except AttributeError:
-        # does not use __pycache__
-        cache_from_source = None
-
-    uses_pycache = cache_from_source is not None
-
-
-if sys.version_info >= (3, 5):
-    backslashreplace_decode = "backslashreplace"
-else:
-    # In version 3.4 and older, backslashreplace exists
-    # but does not support use for decoding.
-    # We implement our own replace handler for this
-    # situation, so that we can consistently use
-    # backslash replacement for all versions.
-    def backslashreplace_decode_fn(err):
-        raw_bytes = (err.object[i] for i in range(err.start, err.end))
-        if sys.version_info[0] == 2:
-            # Python 2 gave us characters - convert to numeric bytes
-            raw_bytes = (ord(b) for b in raw_bytes)
-        return u"".join(u"\\x%x" % c for c in raw_bytes), err.end
-    codecs.register_error(
-        "backslashreplace_decode",
-        backslashreplace_decode_fn,
-    )
-    backslashreplace_decode = "backslashreplace_decode"
-
-
-def console_to_str(data):
-    # type: (bytes) -> Text
-    """Return a string, safe for output, of subprocess output.
-
-    We assume the data is in the locale preferred encoding.
-    If it won't decode properly, we warn the user but decode as
-    best we can.
-
-    We also ensure that the output can be safely written to
-    standard output without encoding errors.
-    """
-
-    # First, get the encoding we assume. This is the preferred
-    # encoding for the locale, unless that is not found, or
-    # it is ASCII, in which case assume UTF-8
-    encoding = locale.getpreferredencoding()
-    if (not encoding) or codecs.lookup(encoding).name == "ascii":
-        encoding = "utf-8"
-
-    # Now try to decode the data - if we fail, warn the user and
-    # decode with replacement.
-    try:
-        decoded_data = data.decode(encoding)
-    except UnicodeDecodeError:
-        logger.warning(
-            "Subprocess output does not appear to be encoded as %s",
-            encoding,
-        )
-        decoded_data = data.decode(encoding, errors=backslashreplace_decode)
-
-    # Make sure we can print the output, by encoding it to the output
-    # encoding with replacement of unencodable characters, and then
-    # decoding again.
-    # We use stderr's encoding because it's less likely to be
-    # redirected and if we don't find an encoding we skip this
-    # step (on the assumption that output is wrapped by something
-    # that won't fail).
-    # The double getattr is to deal with the possibility that we're
-    # being called in a situation where sys.__stderr__ doesn't exist,
-    # or doesn't have an encoding attribute. Neither of these cases
-    # should occur in normal pip use, but there's no harm in checking
-    # in case people use pip in (unsupported) unusual situations.
-    output_encoding = getattr(getattr(sys, "__stderr__", None),
-                              "encoding", None)
-
-    if output_encoding:
-        output_encoded = decoded_data.encode(
-            output_encoding,
-            errors="backslashreplace"
-        )
-        decoded_data = output_encoded.decode(output_encoding)
-
-    return decoded_data
-
-
-if sys.version_info >= (3,):
-    def native_str(s, replace=False):
-        # type: (str, bool) -> str
-        if isinstance(s, bytes):
-            return s.decode('utf-8', 'replace' if replace else 'strict')
-        return s
-
-else:
-    def native_str(s, replace=False):
-        # type: (str, bool) -> str
-        # Replace is ignored -- unicode to UTF-8 can't fail
-        if isinstance(s, text_type):
-            return s.encode('utf-8')
-        return s
-
-
-def get_path_uid(path):
-    # type: (str) -> int
-    """
-    Return path's uid.
-
-    Does not follow symlinks:
-        https://github.com/pypa/pip/pull/935#discussion_r5307003
-
-    Placed this function in compat due to differences on AIX and
-    Jython, that should eventually go away.
-
-    :raises OSError: When path is a symlink or can't be read.
-    """
-    if hasattr(os, 'O_NOFOLLOW'):
-        fd = os.open(path, os.O_RDONLY | os.O_NOFOLLOW)
-        file_uid = os.fstat(fd).st_uid
-        os.close(fd)
-    else:  # AIX and Jython
-        # WARNING: time of check vulnerability, but best we can do w/o NOFOLLOW
-        if not os.path.islink(path):
-            # older versions of Jython don't have `os.fstat`
-            file_uid = os.stat(path).st_uid
-        else:
-            # raise OSError for parity with os.O_NOFOLLOW above
-            raise OSError(
-                "%s is a symlink; Will not return uid for symlinks" % path
-            )
-    return file_uid
-
-
-if sys.version_info >= (3, 4):
-    from importlib.machinery import EXTENSION_SUFFIXES
-
-    def get_extension_suffixes():
-        return EXTENSION_SUFFIXES
-else:
-    from imp import get_suffixes
-
-    def get_extension_suffixes():
-        return [suffix[0] for suffix in get_suffixes()]
-
-
-def expanduser(path):
-    # type: (str) -> str
-    """
-    Expand ~ and ~user constructions.
-
-    Includes a workaround for https://bugs.python.org/issue14768
-    """
-    expanded = os.path.expanduser(path)
-    if path.startswith('~/') and expanded.startswith('//'):
-        expanded = expanded[1:]
-    return expanded
-
-
-# packages in the stdlib that may have installation metadata, but should not be
-# considered 'installed'.  this theoretically could be determined based on
-# dist.location (py27:`sysconfig.get_paths()['stdlib']`,
-# py26:sysconfig.get_config_vars('LIBDEST')), but fear platform variation may
-# make this ineffective, so hard-coding
-stdlib_pkgs = {"python", "wsgiref", "argparse"}
-
-
-# windows detection, covers cpython and ironpython
-WINDOWS = (sys.platform.startswith("win") or
-           (sys.platform == 'cli' and os.name == 'nt'))
-
-
-def samefile(file1, file2):
-    # type: (str, str) -> bool
-    """Provide an alternative for os.path.samefile on Windows/Python2"""
-    if hasattr(os.path, 'samefile'):
-        return os.path.samefile(file1, file2)
-    else:
-        path1 = os.path.normcase(os.path.abspath(file1))
-        path2 = os.path.normcase(os.path.abspath(file2))
-        return path1 == path2
-
-
-if hasattr(shutil, 'get_terminal_size'):
-    def get_terminal_size():
-        # type: () -> Tuple[int, int]
-        """
-        Returns a tuple (x, y) representing the width(x) and the height(y)
-        in characters of the terminal window.
-        """
-        return tuple(shutil.get_terminal_size())  # type: ignore
-else:
-    def get_terminal_size():
-        # type: () -> Tuple[int, int]
-        """
-        Returns a tuple (x, y) representing the width(x) and the height(y)
-        in characters of the terminal window.
-        """
-        def ioctl_GWINSZ(fd):
-            try:
-                import fcntl
-                import termios
-                import struct
-                cr = struct.unpack_from(
-                    'hh',
-                    fcntl.ioctl(fd, termios.TIOCGWINSZ, '12345678')
-                )
-            except Exception:
-                return None
-            if cr == (0, 0):
-                return None
-            return cr
-        cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
-        if not cr:
-            try:
-                fd = os.open(os.ctermid(), os.O_RDONLY)
-                cr = ioctl_GWINSZ(fd)
-                os.close(fd)
-            except Exception:
-                pass
-        if not cr:
-            cr = (os.environ.get('LINES', 25), os.environ.get('COLUMNS', 80))
-        return int(cr[1]), int(cr[0])

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/deprecation.py

@@ -1,90 +0,0 @@
-"""
-A module that implements tooling to enable easy warnings about deprecations.
-"""
-from __future__ import absolute_import
-
-import logging
-import warnings
-
-from pip._vendor.packaging.version import parse
-
-from pip import __version__ as current_version
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Any, Optional  # noqa: F401
-
-
-class PipDeprecationWarning(Warning):
-    pass
-
-
-_original_showwarning = None  # type: Any
-
-
-# Warnings <-> Logging Integration
-def _showwarning(message, category, filename, lineno, file=None, line=None):
-    if file is not None:
-        if _original_showwarning is not None:
-            _original_showwarning(
-                message, category, filename, lineno, file, line,
-            )
-    elif issubclass(category, PipDeprecationWarning):
-        # We use a specially named logger which will handle all of the
-        # deprecation messages for pip.
-        logger = logging.getLogger("pip._internal.deprecations")
-        logger.warning(message)
-    else:
-        _original_showwarning(
-            message, category, filename, lineno, file, line,
-        )
-
-
-def install_warning_logger():
-    # type: () -> None
-    # Enable our Deprecation Warnings
-    warnings.simplefilter("default", PipDeprecationWarning, append=True)
-
-    global _original_showwarning
-
-    if _original_showwarning is None:
-        _original_showwarning = warnings.showwarning
-        warnings.showwarning = _showwarning
-
-
-def deprecated(reason, replacement, gone_in, issue=None):
-    # type: (str, Optional[str], Optional[str], Optional[int]) -> None
-    """Helper to deprecate existing functionality.
-
-    reason:
-        Textual reason shown to the user about why this functionality has
-        been deprecated.
-    replacement:
-        Textual suggestion shown to the user about what alternative
-        functionality they can use.
-    gone_in:
-        The version of pip does this functionality should get removed in.
-        Raises errors if pip's current version is greater than or equal to
-        this.
-    issue:
-        Issue number on the tracker that would serve as a useful place for
-        users to find related discussion and provide feedback.
-
-    Always pass replacement, gone_in and issue as keyword arguments for clarity
-    at the call site.
-    """
-
-    # Construct a nice message.
-    # This is purposely eagerly formatted as we want it to appear as if someone
-    # typed this entire message out.
-    message = "DEPRECATION: " + reason
-    if replacement is not None:
-        message += " A possible replacement is {}.".format(replacement)
-    if issue is not None:
-        url = "https://github.com/pypa/pip/issues/" + str(issue)
-        message += " You can find discussion regarding this at {}.".format(url)
-
-    # Raise as an error if it has to be removed.
-    if gone_in is not None and parse(current_version) >= parse(gone_in):
-        raise PipDeprecationWarning(message)
-    warnings.warn(message, category=PipDeprecationWarning, stacklevel=2)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/encoding.py

@@ -1,39 +0,0 @@
-import codecs
-import locale
-import re
-import sys
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import List, Tuple, Text  # noqa: F401
-
-BOMS = [
-    (codecs.BOM_UTF8, 'utf8'),
-    (codecs.BOM_UTF16, 'utf16'),
-    (codecs.BOM_UTF16_BE, 'utf16-be'),
-    (codecs.BOM_UTF16_LE, 'utf16-le'),
-    (codecs.BOM_UTF32, 'utf32'),
-    (codecs.BOM_UTF32_BE, 'utf32-be'),
-    (codecs.BOM_UTF32_LE, 'utf32-le'),
-]  # type: List[Tuple[bytes, Text]]
-
-ENCODING_RE = re.compile(br'coding[:=]\s*([-\w.]+)')
-
-
-def auto_decode(data):
-    # type: (bytes) -> Text
-    """Check a bytes string for a BOM to correctly detect the encoding
-
-    Fallback to locale.getpreferredencoding(False) like open() on Python3"""
-    for bom, encoding in BOMS:
-        if data.startswith(bom):
-            return data[len(bom):].decode(encoding)
-    # Lets check the first two lines as in PEP263
-    for line in data.split(b'\n')[:2]:
-        if line[0:1] == b'#' and ENCODING_RE.search(line):
-            encoding = ENCODING_RE.search(line).groups()[0].decode('ascii')
-            return data.decode(encoding)
-    return data.decode(
-        locale.getpreferredencoding(False) or sys.getdefaultencoding(),
-    )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/filesystem.py

@@ -1,30 +0,0 @@
-import os
-import os.path
-
-from pip._internal.utils.compat import get_path_uid
-
-
-def check_path_owner(path):
-    # type: (str) -> bool
-    # If we don't have a way to check the effective uid of this process, then
-    # we'll just assume that we own the directory.
-    if not hasattr(os, "geteuid"):
-        return True
-
-    previous = None
-    while path != previous:
-        if os.path.lexists(path):
-            # Check if path is writable by current user.
-            if os.geteuid() == 0:
-                # Special handling for root user in order to handle properly
-                # cases where users use sudo without -H flag.
-                try:
-                    path_uid = get_path_uid(path)
-                except OSError:
-                    return False
-                return path_uid == 0
-            else:
-                return os.access(path, os.W_OK)
-        else:
-            previous, path = path, os.path.dirname(path)
-    return False  # assume we don't own the path

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/glibc.py

@@ -1,93 +0,0 @@
-from __future__ import absolute_import
-
-import ctypes
-import re
-import warnings
-
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional, Tuple  # noqa: F401
-
-
-def glibc_version_string():
-    # type: () -> Optional[str]
-    "Returns glibc version string, or None if not using glibc."
-
-    # ctypes.CDLL(None) internally calls dlopen(NULL), and as the dlopen
-    # manpage says, "If filename is NULL, then the returned handle is for the
-    # main program". This way we can let the linker do the work to figure out
-    # which libc our process is actually using.
-    process_namespace = ctypes.CDLL(None)
-    try:
-        gnu_get_libc_version = process_namespace.gnu_get_libc_version
-    except AttributeError:
-        # Symbol doesn't exist -> therefore, we are not linked to
-        # glibc.
-        return None
-
-    # Call gnu_get_libc_version, which returns a string like "2.5"
-    gnu_get_libc_version.restype = ctypes.c_char_p
-    version_str = gnu_get_libc_version()
-    # py2 / py3 compatibility:
-    if not isinstance(version_str, str):
-        version_str = version_str.decode("ascii")
-
-    return version_str
-
-
-# Separated out from have_compatible_glibc for easier unit testing
-def check_glibc_version(version_str, required_major, minimum_minor):
-    # type: (str, int, int) -> bool
-    # Parse string and check against requested version.
-    #
-    # We use a regexp instead of str.split because we want to discard any
-    # random junk that might come after the minor version -- this might happen
-    # in patched/forked versions of glibc (e.g. Linaro's version of glibc
-    # uses version strings like "2.20-2014.11"). See gh-3588.
-    m = re.match(r"(?P<major>[0-9]+)\.(?P<minor>[0-9]+)", version_str)
-    if not m:
-        warnings.warn("Expected glibc version with 2 components major.minor,"
-                      " got: %s" % version_str, RuntimeWarning)
-        return False
-    return (int(m.group("major")) == required_major and
-            int(m.group("minor")) >= minimum_minor)
-
-
-def have_compatible_glibc(required_major, minimum_minor):
-    # type: (int, int) -> bool
-    version_str = glibc_version_string()  # type: Optional[str]
-    if version_str is None:
-        return False
-    return check_glibc_version(version_str, required_major, minimum_minor)
-
-
-# platform.libc_ver regularly returns completely nonsensical glibc
-# versions. E.g. on my computer, platform says:
-#
-#   ~$ python2.7 -c 'import platform; print(platform.libc_ver())'
-#   ('glibc', '2.7')
-#   ~$ python3.5 -c 'import platform; print(platform.libc_ver())'
-#   ('glibc', '2.9')
-#
-# But the truth is:
-#
-#   ~$ ldd --version
-#   ldd (Debian GLIBC 2.22-11) 2.22
-#
-# This is unfortunate, because it means that the linehaul data on libc
-# versions that was generated by pip 8.1.2 and earlier is useless and
-# misleading. Solution: instead of using platform, use our code that actually
-# works.
-def libc_ver():
-    # type: () -> Tuple[str, str]
-    """Try to determine the glibc version
-
-    Returns a tuple of strings (lib, version) which default to empty strings
-    in case the lookup fails.
-    """
-    glibc_version = glibc_version_string()
-    if glibc_version is None:
-        return ("", "")
-    else:
-        return ("glibc", glibc_version)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/hashes.py

@@ -1,115 +0,0 @@
-from __future__ import absolute_import
-
-import hashlib
-
-from pip._vendor.six import iteritems, iterkeys, itervalues
-
-from pip._internal.exceptions import (
-    HashMismatch, HashMissing, InstallationError,
-)
-from pip._internal.utils.misc import read_chunks
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import (  # noqa: F401
-        Dict, List, BinaryIO, NoReturn, Iterator
-    )
-    from pip._vendor.six import PY3
-    if PY3:
-        from hashlib import _Hash  # noqa: F401
-    else:
-        from hashlib import _hash as _Hash  # noqa: F401
-
-
-# The recommended hash algo of the moment. Change this whenever the state of
-# the art changes; it won't hurt backward compatibility.
-FAVORITE_HASH = 'sha256'
-
-
-# Names of hashlib algorithms allowed by the --hash option and ``pip hash``
-# Currently, those are the ones at least as collision-resistant as sha256.
-STRONG_HASHES = ['sha256', 'sha384', 'sha512']
-
-
-class Hashes(object):
-    """A wrapper that builds multiple hashes at once and checks them against
-    known-good values
-
-    """
-    def __init__(self, hashes=None):
-        # type: (Dict[str, List[str]]) -> None
-        """
-        :param hashes: A dict of algorithm names pointing to lists of allowed
-            hex digests
-        """
-        self._allowed = {} if hashes is None else hashes
-
-    def check_against_chunks(self, chunks):
-        # type: (Iterator[bytes]) -> None
-        """Check good hashes against ones built from iterable of chunks of
-        data.
-
-        Raise HashMismatch if none match.
-
-        """
-        gots = {}
-        for hash_name in iterkeys(self._allowed):
-            try:
-                gots[hash_name] = hashlib.new(hash_name)
-            except (ValueError, TypeError):
-                raise InstallationError('Unknown hash name: %s' % hash_name)
-
-        for chunk in chunks:
-            for hash in itervalues(gots):
-                hash.update(chunk)
-
-        for hash_name, got in iteritems(gots):
-            if got.hexdigest() in self._allowed[hash_name]:
-                return
-        self._raise(gots)
-
-    def _raise(self, gots):
-        # type: (Dict[str, _Hash]) -> NoReturn
-        raise HashMismatch(self._allowed, gots)
-
-    def check_against_file(self, file):
-        # type: (BinaryIO) -> None
-        """Check good hashes against a file-like object
-
-        Raise HashMismatch if none match.
-
-        """
-        return self.check_against_chunks(read_chunks(file))
-
-    def check_against_path(self, path):
-        # type: (str) -> None
-        with open(path, 'rb') as file:
-            return self.check_against_file(file)
-
-    def __nonzero__(self):
-        # type: () -> bool
-        """Return whether I know any known-good hashes."""
-        return bool(self._allowed)
-
-    def __bool__(self):
-        # type: () -> bool
-        return self.__nonzero__()
-
-
-class MissingHashes(Hashes):
-    """A workalike for Hashes used when we're missing a hash for a requirement
-
-    It computes the actual hash of the requirement and raises a HashMissing
-    exception showing it to the user.
-
-    """
-    def __init__(self):
-        # type: () -> None
-        """Don't offer the ``hashes`` kwarg."""
-        # Pass our favorite hash in to generate a "gotten hash". With the
-        # empty list, it will never match, so an error will always raise.
-        super(MissingHashes, self).__init__(hashes={FAVORITE_HASH: []})
-
-    def _raise(self, gots):
-        # type: (Dict[str, _Hash]) -> NoReturn
-        raise HashMissing(gots[FAVORITE_HASH].hexdigest())

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/logging.py

@@ -1,318 +0,0 @@
-from __future__ import absolute_import
-
-import contextlib
-import errno
-import logging
-import logging.handlers
-import os
-import sys
-
-from pip._vendor.six import PY2
-
-from pip._internal.utils.compat import WINDOWS
-from pip._internal.utils.misc import ensure_dir
-
-try:
-    import threading
-except ImportError:
-    import dummy_threading as threading  # type: ignore
-
-
-try:
-    from pip._vendor import colorama
-# Lots of different errors can come from this, including SystemError and
-# ImportError.
-except Exception:
-    colorama = None
-
-
-_log_state = threading.local()
-_log_state.indentation = 0
-
-
-class BrokenStdoutLoggingError(Exception):
-    """
-    Raised if BrokenPipeError occurs for the stdout stream while logging.
-    """
-    pass
-
-
-# BrokenPipeError does not exist in Python 2 and, in addition, manifests
-# differently in Windows and non-Windows.
-if WINDOWS:
-    # In Windows, a broken pipe can show up as EINVAL rather than EPIPE:
-    # https://bugs.python.org/issue19612
-    # https://bugs.python.org/issue30418
-    if PY2:
-        def _is_broken_pipe_error(exc_class, exc):
-            """See the docstring for non-Windows Python 3 below."""
-            return (exc_class is IOError and
-                    exc.errno in (errno.EINVAL, errno.EPIPE))
-    else:
-        # In Windows, a broken pipe IOError became OSError in Python 3.
-        def _is_broken_pipe_error(exc_class, exc):
-            """See the docstring for non-Windows Python 3 below."""
-            return ((exc_class is BrokenPipeError) or  # noqa: F821
-                    (exc_class is OSError and
-                     exc.errno in (errno.EINVAL, errno.EPIPE)))
-elif PY2:
-    def _is_broken_pipe_error(exc_class, exc):
-        """See the docstring for non-Windows Python 3 below."""
-        return (exc_class is IOError and exc.errno == errno.EPIPE)
-else:
-    # Then we are in the non-Windows Python 3 case.
-    def _is_broken_pipe_error(exc_class, exc):
-        """
-        Return whether an exception is a broken pipe error.
-
-        Args:
-          exc_class: an exception class.
-          exc: an exception instance.
-        """
-        return (exc_class is BrokenPipeError)  # noqa: F821
-
-
-@contextlib.contextmanager
-def indent_log(num=2):
-    """
-    A context manager which will cause the log output to be indented for any
-    log messages emitted inside it.
-    """
-    _log_state.indentation += num
-    try:
-        yield
-    finally:
-        _log_state.indentation -= num
-
-
-def get_indentation():
-    return getattr(_log_state, 'indentation', 0)
-
-
-class IndentingFormatter(logging.Formatter):
-    def __init__(self, *args, **kwargs):
-        """
-        A logging.Formatter obeying containing indent_log contexts.
-
-        :param add_timestamp: A bool indicating output lines should be prefixed
-            with their record's timestamp.
-        """
-        self.add_timestamp = kwargs.pop("add_timestamp", False)
-        super(IndentingFormatter, self).__init__(*args, **kwargs)
-
-    def format(self, record):
-        """
-        Calls the standard formatter, but will indent all of the log messages
-        by our current indentation level.
-        """
-        formatted = super(IndentingFormatter, self).format(record)
-        prefix = ''
-        if self.add_timestamp:
-            prefix = self.formatTime(record, "%Y-%m-%dT%H:%M:%S ")
-        prefix += " " * get_indentation()
-        formatted = "".join([
-            prefix + line
-            for line in formatted.splitlines(True)
-        ])
-        return formatted
-
-
-def _color_wrap(*colors):
-    def wrapped(inp):
-        return "".join(list(colors) + [inp, colorama.Style.RESET_ALL])
-    return wrapped
-
-
-class ColorizedStreamHandler(logging.StreamHandler):
-
-    # Don't build up a list of colors if we don't have colorama
-    if colorama:
-        COLORS = [
-            # This needs to be in order from highest logging level to lowest.
-            (logging.ERROR, _color_wrap(colorama.Fore.RED)),
-            (logging.WARNING, _color_wrap(colorama.Fore.YELLOW)),
-        ]
-    else:
-        COLORS = []
-
-    def __init__(self, stream=None, no_color=None):
-        logging.StreamHandler.__init__(self, stream)
-        self._no_color = no_color
-
-        if WINDOWS and colorama:
-            self.stream = colorama.AnsiToWin32(self.stream)
-
-    def _using_stdout(self):
-        """
-        Return whether the handler is using sys.stdout.
-        """
-        if WINDOWS and colorama:
-            # Then self.stream is an AnsiToWin32 object.
-            return self.stream.wrapped is sys.stdout
-
-        return self.stream is sys.stdout
-
-    def should_color(self):
-        # Don't colorize things if we do not have colorama or if told not to
-        if not colorama or self._no_color:
-            return False
-
-        real_stream = (
-            self.stream if not isinstance(self.stream, colorama.AnsiToWin32)
-            else self.stream.wrapped
-        )
-
-        # If the stream is a tty we should color it
-        if hasattr(real_stream, "isatty") and real_stream.isatty():
-            return True
-
-        # If we have an ANSI term we should color it
-        if os.environ.get("TERM") == "ANSI":
-            return True
-
-        # If anything else we should not color it
-        return False
-
-    def format(self, record):
-        msg = logging.StreamHandler.format(self, record)
-
-        if self.should_color():
-            for level, color in self.COLORS:
-                if record.levelno >= level:
-                    msg = color(msg)
-                    break
-
-        return msg
-
-    # The logging module says handleError() can be customized.
-    def handleError(self, record):
-        exc_class, exc = sys.exc_info()[:2]
-        # If a broken pipe occurred while calling write() or flush() on the
-        # stdout stream in logging's Handler.emit(), then raise our special
-        # exception so we can handle it in main() instead of logging the
-        # broken pipe error and continuing.
-        if (exc_class and self._using_stdout() and
-                _is_broken_pipe_error(exc_class, exc)):
-            raise BrokenStdoutLoggingError()
-
-        return super(ColorizedStreamHandler, self).handleError(record)
-
-
-class BetterRotatingFileHandler(logging.handlers.RotatingFileHandler):
-
-    def _open(self):
-        ensure_dir(os.path.dirname(self.baseFilename))
-        return logging.handlers.RotatingFileHandler._open(self)
-
-
-class MaxLevelFilter(logging.Filter):
-
-    def __init__(self, level):
-        self.level = level
-
-    def filter(self, record):
-        return record.levelno < self.level
-
-
-def setup_logging(verbosity, no_color, user_log_file):
-    """Configures and sets up all of the logging
-
-    Returns the requested logging level, as its integer value.
-    """
-
-    # Determine the level to be logging at.
-    if verbosity >= 1:
-        level = "DEBUG"
-    elif verbosity == -1:
-        level = "WARNING"
-    elif verbosity == -2:
-        level = "ERROR"
-    elif verbosity <= -3:
-        level = "CRITICAL"
-    else:
-        level = "INFO"
-
-    level_number = getattr(logging, level)
-
-    # The "root" logger should match the "console" level *unless* we also need
-    # to log to a user log file.
-    include_user_log = user_log_file is not None
-    if include_user_log:
-        additional_log_file = user_log_file
-        root_level = "DEBUG"
-    else:
-        additional_log_file = "/dev/null"
-        root_level = level
-
-    # Disable any logging besides WARNING unless we have DEBUG level logging
-    # enabled for vendored libraries.
-    vendored_log_level = "WARNING" if level in ["INFO", "ERROR"] else "DEBUG"
-
-    # Shorthands for clarity
-    log_streams = {
-        "stdout": "ext://sys.stdout",
-        "stderr": "ext://sys.stderr",
-    }
-    handler_classes = {
-        "stream": "pip._internal.utils.logging.ColorizedStreamHandler",
-        "file": "pip._internal.utils.logging.BetterRotatingFileHandler",
-    }
-
-    logging.config.dictConfig({
-        "version": 1,
-        "disable_existing_loggers": False,
-        "filters": {
-            "exclude_warnings": {
-                "()": "pip._internal.utils.logging.MaxLevelFilter",
-                "level": logging.WARNING,
-            },
-        },
-        "formatters": {
-            "indent": {
-                "()": IndentingFormatter,
-                "format": "%(message)s",
-            },
-            "indent_with_timestamp": {
-                "()": IndentingFormatter,
-                "format": "%(message)s",
-                "add_timestamp": True,
-            },
-        },
-        "handlers": {
-            "console": {
-                "level": level,
-                "class": handler_classes["stream"],
-                "no_color": no_color,
-                "stream": log_streams["stdout"],
-                "filters": ["exclude_warnings"],
-                "formatter": "indent",
-            },
-            "console_errors": {
-                "level": "WARNING",
-                "class": handler_classes["stream"],
-                "no_color": no_color,
-                "stream": log_streams["stderr"],
-                "formatter": "indent",
-            },
-            "user_log": {
-                "level": "DEBUG",
-                "class": handler_classes["file"],
-                "filename": additional_log_file,
-                "delay": True,
-                "formatter": "indent_with_timestamp",
-            },
-        },
-        "root": {
-            "level": root_level,
-            "handlers": ["console", "console_errors"] + (
-                ["user_log"] if include_user_log else []
-            ),
-        },
-        "loggers": {
-            "pip._vendor": {
-                "level": vendored_log_level
-            }
-        },
-    })
-
-    return level_number

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/models.py

@@ -1,40 +0,0 @@
-"""Utilities for defining models
-"""
-
-import operator
-
-
-class KeyBasedCompareMixin(object):
-    """Provides comparision capabilities that is based on a key
-    """
-
-    def __init__(self, key, defining_class):
-        self._compare_key = key
-        self._defining_class = defining_class
-
-    def __hash__(self):
-        return hash(self._compare_key)
-
-    def __lt__(self, other):
-        return self._compare(other, operator.__lt__)
-
-    def __le__(self, other):
-        return self._compare(other, operator.__le__)
-
-    def __gt__(self, other):
-        return self._compare(other, operator.__gt__)
-
-    def __ge__(self, other):
-        return self._compare(other, operator.__ge__)
-
-    def __eq__(self, other):
-        return self._compare(other, operator.__eq__)
-
-    def __ne__(self, other):
-        return self._compare(other, operator.__ne__)
-
-    def _compare(self, other, method):
-        if not isinstance(other, self._defining_class):
-            return NotImplemented
-
-        return method(self._compare_key, other._compare_key)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/outdated.py

@@ -1,164 +0,0 @@
-from __future__ import absolute_import
-
-import datetime
-import json
-import logging
-import os.path
-import sys
-
-from pip._vendor import lockfile, pkg_resources
-from pip._vendor.packaging import version as packaging_version
-
-from pip._internal.index import PackageFinder
-from pip._internal.utils.compat import WINDOWS
-from pip._internal.utils.filesystem import check_path_owner
-from pip._internal.utils.misc import ensure_dir, get_installed_version
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    import optparse  # noqa: F401
-    from typing import Any, Dict  # noqa: F401
-    from pip._internal.download import PipSession  # noqa: F401
-
-
-SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"
-
-
-logger = logging.getLogger(__name__)
-
-
-class SelfCheckState(object):
-    def __init__(self, cache_dir):
-        # type: (str) -> None
-        self.state = {}  # type: Dict[str, Any]
-        self.statefile_path = None
-
-        # Try to load the existing state
-        if cache_dir:
-            self.statefile_path = os.path.join(cache_dir, "selfcheck.json")
-            try:
-                with open(self.statefile_path) as statefile:
-                    self.state = json.load(statefile)[sys.prefix]
-            except (IOError, ValueError, KeyError):
-                # Explicitly suppressing exceptions, since we don't want to
-                # error out if the cache file is invalid.
-                pass
-
-    def save(self, pypi_version, current_time):
-        # type: (str, datetime.datetime) -> None
-        # If we do not have a path to cache in, don't bother saving.
-        if not self.statefile_path:
-            return
-
-        # Check to make sure that we own the directory
-        if not check_path_owner(os.path.dirname(self.statefile_path)):
-            return
-
-        # Now that we've ensured the directory is owned by this user, we'll go
-        # ahead and make sure that all our directories are created.
-        ensure_dir(os.path.dirname(self.statefile_path))
-
-        # Attempt to write out our version check file
-        with lockfile.LockFile(self.statefile_path):
-            if os.path.exists(self.statefile_path):
-                with open(self.statefile_path) as statefile:
-                    state = json.load(statefile)
-            else:
-                state = {}
-
-            state[sys.prefix] = {
-                "last_check": current_time.strftime(SELFCHECK_DATE_FMT),
-                "pypi_version": pypi_version,
-            }
-
-            with open(self.statefile_path, "w") as statefile:
-                json.dump(state, statefile, sort_keys=True,
-                          separators=(",", ":"))
-
-
-def was_installed_by_pip(pkg):
-    # type: (str) -> bool
-    """Checks whether pkg was installed by pip
-
-    This is used not to display the upgrade message when pip is in fact
-    installed by system package manager, such as dnf on Fedora.
-    """
-    try:
-        dist = pkg_resources.get_distribution(pkg)
-        return (dist.has_metadata('INSTALLER') and
-                'pip' in dist.get_metadata_lines('INSTALLER'))
-    except pkg_resources.DistributionNotFound:
-        return False
-
-
-def pip_version_check(session, options):
-    # type: (PipSession, optparse.Values) -> None
-    """Check for an update for pip.
-
-    Limit the frequency of checks to once per week. State is stored either in
-    the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
-    of the pip script path.
-    """
-    installed_version = get_installed_version("pip")
-    if not installed_version:
-        return
-
-    pip_version = packaging_version.parse(installed_version)
-    pypi_version = None
-
-    try:
-        state = SelfCheckState(cache_dir=options.cache_dir)
-
-        current_time = datetime.datetime.utcnow()
-        # Determine if we need to refresh the state
-        if "last_check" in state.state and "pypi_version" in state.state:
-            last_check = datetime.datetime.strptime(
-                state.state["last_check"],
-                SELFCHECK_DATE_FMT
-            )
-            if (current_time - last_check).total_seconds() < 7 * 24 * 60 * 60:
-                pypi_version = state.state["pypi_version"]
-
-        # Refresh the version if we need to or just see if we need to warn
-        if pypi_version is None:
-            # Lets use PackageFinder to see what the latest pip version is
-            finder = PackageFinder(
-                find_links=options.find_links,
-                index_urls=[options.index_url] + options.extra_index_urls,
-                allow_all_prereleases=False,  # Explicitly set to False
-                trusted_hosts=options.trusted_hosts,
-                session=session,
-            )
-            all_candidates = finder.find_all_candidates("pip")
-            if not all_candidates:
-                return
-            pypi_version = str(
-                max(all_candidates, key=lambda c: c.version).version
-            )
-
-            # save that we've performed a check
-            state.save(pypi_version, current_time)
-
-        remote_version = packaging_version.parse(pypi_version)
-
-        # Determine if our pypi_version is older
-        if (pip_version < remote_version and
-                pip_version.base_version != remote_version.base_version and
-                was_installed_by_pip('pip')):
-            # Advise "python -m pip" on Windows to avoid issues
-            # with overwriting pip.exe.
-            if WINDOWS:
-                pip_cmd = "python -m pip"
-            else:
-                pip_cmd = "pip"
-            logger.warning(
-                "You are using pip version %s, however version %s is "
-                "available.\nYou should consider upgrading via the "
-                "'%s install --upgrade pip' command.",
-                pip_version, pypi_version, pip_cmd
-            )
-    except Exception:
-        logger.debug(
-            "There was an error checking the latest version of pip",
-            exc_info=True,
-        )

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/packaging.py

@@ -1,85 +0,0 @@
-from __future__ import absolute_import
-
-import logging
-import sys
-from email.parser import FeedParser
-
-from pip._vendor import pkg_resources
-from pip._vendor.packaging import specifiers, version
-
-from pip._internal import exceptions
-from pip._internal.utils.misc import display_path
-from pip._internal.utils.typing import MYPY_CHECK_RUNNING
-
-if MYPY_CHECK_RUNNING:
-    from typing import Optional  # noqa: F401
-    from email.message import Message  # noqa: F401
-    from pip._vendor.pkg_resources import Distribution  # noqa: F401
-
-
-logger = logging.getLogger(__name__)
-
-
-def check_requires_python(requires_python):
-    # type: (Optional[str]) -> bool
-    """
-    Check if the python version in use match the `requires_python` specifier.
-
-    Returns `True` if the version of python in use matches the requirement.
-    Returns `False` if the version of python in use does not matches the
-    requirement.
-
-    Raises an InvalidSpecifier if `requires_python` have an invalid format.
-    """
-    if requires_python is None:
-        # The package provides no information
-        return True
-    requires_python_specifier = specifiers.SpecifierSet(requires_python)
-
-    # We only use major.minor.micro
-    python_version = version.parse('.'.join(map(str, sys.version_info[:3])))
-    return python_version in requires_python_specifier
-
-
-def get_metadata(dist):
-    # type: (Distribution) -> Message
-    if (isinstance(dist, pkg_resources.DistInfoDistribution) and
-            dist.has_metadata('METADATA')):
-        metadata = dist.get_metadata('METADATA')
-    elif dist.has_metadata('PKG-INFO'):
-        metadata = dist.get_metadata('PKG-INFO')
-    else:
-        logger.warning("No metadata found in %s", display_path(dist.location))
-        metadata = ''
-
-    feed_parser = FeedParser()
-    feed_parser.feed(metadata)
-    return feed_parser.close()
-
-
-def check_dist_requires_python(dist):
-    pkg_info_dict = get_metadata(dist)
-    requires_python = pkg_info_dict.get('Requires-Python')
-    try:
-        if not check_requires_python(requires_python):
-            raise exceptions.UnsupportedPythonVersion(
-                "%s requires Python '%s' but the running Python is %s" % (
-                    dist.project_name,
-                    requires_python,
-                    '.'.join(map(str, sys.version_info[:3])),)
-            )
-    except specifiers.InvalidSpecifier as e:
-        logger.warning(
-            "Package %s has an invalid Requires-Python entry %s - %s",
-            dist.project_name, requires_python, e,
-        )
-        return
-
-
-def get_installer(dist):
-    # type: (Distribution) -> str
-    if dist.has_metadata('INSTALLER'):
-        for line in dist.get_metadata_lines('INSTALLER'):
-            if line.strip():
-                return line.strip()
-    return ''

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/setuptools_build.py

@@ -1,8 +0,0 @@
-# Shim to wrap setup.py invocation with setuptools
-SETUPTOOLS_SHIM = (
-    "import setuptools, tokenize;__file__=%r;"
-    "f=getattr(tokenize, 'open', open)(__file__);"
-    "code=f.read().replace('\\r\\n', '\\n');"
-    "f.close();"
-    "exec(compile(code, __file__, 'exec'))"
-)

kelner/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/temp_dir.py

@@ -1,155 +0,0 @@
-from __future__ import absolute_import
-
-import errno
-import itertools
-import logging
-import os.path
-import tempfile
-
-from pip._internal.utils.misc import rmtree
-
-logger = logging.getLogger(__name__)
-
-
-class TempDirectory(object):
-    """Helper class that owns and cleans up a temporary directory.
-
-    This class can be used as a context manager or as an OO representation of a
-    temporary directory.
-
-    Attributes:
-        path
-            Location to the created temporary directory or None
-        delete
-            Whether the directory should be deleted when exiting
-            (when used as a contextmanager)
-
-    Methods:
-        create()
-            Creates a temporary directory and stores its path in the path
-            attribute.
-        cleanup()
-            Deletes the temporary directory and sets path attribute to None
-
-    When used as a context manager, a temporary directory is created on
-    entering the context and, if the delete attribute is True, on exiting the
-    context the created directory is deleted.
-    """
-
-    def __init__(self, path=None, delete=None, kind="temp"):
-        super(TempDirectory, self).__init__()
-
-        if path is None and delete is None:
-            # If we were not given an explicit directory, and we were not given
-            # an explicit delete option, then we'll default to deleting.
-            delete = True
-
-        self.path = path
-        self.delete = delete
-        self.kind = kind
-
-    def __repr__(self):
-        return "<{} {!r}>".format(self.__class__.__name__, self.path)
-
-    def __enter__(self):
-        self.create()
-        return self
-
-    def __exit__(self, exc, value, tb):
-        if self.delete:
-            self.cleanup()
-
-    def create(self):
-        """Create a temporary directory and store its path in self.path
-        """
-        if self.path is not None:
-            logger.debug(
-                "Skipped creation of temporary directory: {}".format(self.path)
-            )
-            return
-        # We realpath here because some systems have their default tmpdir
-        # symlinked to another directory.  This tends to confuse build
-        # scripts, so we canonicalize the path by traversing potential
-        # symlinks here.
-        self.path = os.path.realpath(
-            tempfile.mkdtemp(prefix="pip-{}-".format(self.kind))
-        )
-        logger.debug("Created temporary directory: {}".format(self.path))
-
-    def cleanup(self):
-        """Remove the temporary directory created and reset state
-        """
-        if self.path is not None and os.path.exists(self.path):
-            rmtree(self.path)
-        self.path = None
-
-
-class AdjacentTempDirectory(TempDirectory):
-    """Helper class that creates a temporary directory adjacent to a real one.
-
-    Attributes:
-        original
-            The original directory to create a temp directory for.
-        path
-            After calling create() or entering, contains the full
-            path to the temporary directory.
-        delete
-            Whether the directory should be deleted when exiting
-            (when used as a contextmanager)
-
-    """
-    # The characters that may be used to name the temp directory
-    # We always prepend a ~ and then rotate through these until
-    # a usable name is found.
-    # pkg_resources raises a different error for .dist-info folder
-    # with leading '-' and invalid metadata
-    LEADING_CHARS = "-~.=%0123456789"
-
-    def __init__(self, original, delete=None):
-        super(AdjacentTempDirectory, self).__init__(delete=delete)
-        self.original = original.rstrip('/\\')
-
-    @classmethod
-    def _generate_names(cls, name):
-        """Generates a series of temporary names.
-
-        The algorithm replaces the leading characters in the name
-        with ones that are valid filesystem characters, but are not
-        valid package names (for both Python and pip definitions of
-        package).
-        """
-        for i in range(1, len(name)):
-            for candidate in itertools.combinations_with_replacement(
-                    cls.LEADING_CHARS, i - 1):
-                new_name = '~' + ''.join(candidate) + name[i:]
-                if new_name != name:
-                    yield new_name
-
-        # If we make it this far, we will have to make a longer name
-        for i in range(len(cls.LEADING_CHARS)):
-            for candidate in itertools.combinations_with_replacement(
-                    cls.LEADING_CHARS, i):
-                new_name = '~' + ''.join(candidate) + name
-                if new_name != name:
-                    yield new_name
-
-    def create(self):
-        root, name = os.path.split(self.original)
-        for candidate in self._generate_names(name):
-            path = os.path.join(root, candidate)
-            try:
-                os.mkdir(path)
-            except OSError as ex:
-                # Continue if the name exists already
-                if ex.errno != errno.EEXIST:
-                    raise
-            else:
-                self.path = os.path.realpath(path)
-                break
-
-        if not self.path:
-            # Final fallback on the default behavior.
-            self.path = os.path.realpath(
-                tempfile.mkdtemp(prefix="pip-{}-".format(self.kind))
-            )
-        logger.debug("Created temporary directory: {}".format(self.path))