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la/Podstawy 2.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "# Python: podstaw ciąg dalszy\n",
+    "\n",
+    "## Tomasz Dwojak\n",
+    "\n",
+    "### 2 grudnia 2017"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Co już znamy?\n",
+    " * podstawowe typy danych i operacje na nich\n",
+    " * Instrukcje sterujące: ``if``, ``for``\n",
+    " * pisanie funkcji\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "source": [
+    "## Co na dziś?\n",
+    "\n",
+    " * ``tuple`` i ``set``,\n",
+    " * operacje na plikach,\n",
+    " * coś więcej o funkcjach\n",
+    " * korzystanie z bibliotek\n",
+    " * przegląd najważniejszych bibliotek"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "def dwojak(x): x *= 2\n",
+    "    \n",
+    "l = [1, 2, 3]\n",
+    "s = \"123\"\n",
+    "\n",
+    "dwojak(l)\n",
+    "dwojak(s)\n",
+    "\n",
+    "print(l)\n",
+    "print(s)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Mutable i Immutable\n",
+    "\n",
+    "### Mutable\n",
+    " * listy,\n",
+    " * słowniki,\n",
+    " * sety,\n",
+    " * własnoręcznie zdefiniowane klasy.\n",
+    " \n",
+    "### Immutable\n",
+    " * liczby: inty i floaty,\n",
+    " * napisy,\n",
+    " * tuple."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Nieoczywistości"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "def dwojak1(x): x *= 2\n",
+    "def dwojak2(x): x = x * 2\n",
+    "\n",
+    "l = [1,2, 3]\n",
+    "dwojak1(l)\n",
+    "print(l)\n",
+    "\n",
+    "l = [1,2, 3]\n",
+    "dwojak2(l)\n",
+    "print(l)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "l = [1, 2, 3]\n",
+    "e = l\n",
+    "e.append(4)\n",
+    "print(l)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "e = []\n",
+    "f = [e for i in range(3)]\n",
+    "f[0].append(1)\n",
+    "print(f)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## To może ``tuple``?\n",
+    " * stały rozmiar,\n",
+    " * immutable,\n",
+    " * mogą być kluczami w słownikach"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "t = (1, \"napis\", None)\n",
+    "elem = t[0]\n",
+    "print(t)\n",
+    "print(len(t))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Funkcje cz. 2"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "def suma(*args):\n",
+    "    return sum(args)\n",
+    "print(suma(1,2,3,4,5))\n",
+    "\n",
+    "def greet_me(**kwargs):\n",
+    "    if kwargs is not None:\n",
+    "        for key, value in kwargs.items():\n",
+    "            print(\"%s == %s\" %(key,value))\n",
+    "greet_me(a=1, b=(3,4))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Generatory"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "def alfaRange(x, y):\n",
+    "    for i in range(ord(x), ord(y)):\n",
+    "        yield chr(i)\n",
+    "\n",
+    "for c in alfaRange('a', 'e'):\n",
+    "    print(c)\n",
+    "    ##druga wersja; w Pythonie3 f range rozni sie od 2\n",
+    "def alfaRange(x, y):\n",
+    "    for i in range(ord(x), ord(y)):\n",
+    "        print(i)\n",
+    "        yield chr(i)\n",
+    "\n",
+    "for c in alfaRange('a', 'e'):\n",
+    "    print(c)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Operacje na plikach"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "plik = open(\"haslo.txt\", 'r') ## r - read only\n",
+    "for linia in plik.readlines():\n",
+    "    print(linia.strip())\n",
+    "print(plik.read())\n",
+    "print(\">>\")\n",
+    "plik.close() ## jesli nie uzyjemy tej funkcji przy duzej liczbie plikow, to skoncza sie deskryptory"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "with open(\"haslo.txt\", 'r') as plik: ## wygodne do pracy z plikami\n",
+    "    for linia in plik.readlines():\n",
+    "        print(linia)\n",
+    "# print(plik.read()) ##nie trzeba zamykac plikow"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true,
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "with open(\"haslo2.txt\", 'w') as plik: ## write - zapis do pliku\n",
+    "    for word in ('corect', 'horse', 'battery', 'staple'):\n",
+    "        plik.write(word)\n",
+    "    plik.write('\\n')\n",
+    "with open(\"haslo2.txt\", 'w+') as plik:\n",
+    "    plik.writelines([' '.join(('corect', 'horse', 'battery', 'staple'))])"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "# Korzystanie z modułów"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Importowanie"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "import os  ##ta biblioteka pozwala na operacje na systemie operacyjnym\n",
+    "print(os.name)\n",
+    "\n",
+    "from os import getenv\n",
+    "print('Nazwa uzytkownika: {}'.format(getenv(\"USER\")))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "from collections import *\n",
+    "print(Counter(\"konstantynopolitańczykowianeczka\"))\n",
+    "\n",
+    "import numpy as np\n",
+    "np.array([[1, 3, 4, 5]], dtype='float32')"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "collapsed": true,
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Instalacja\n",
+    "\n",
+    " * lokalnie (per użytkownik) lub globalnie\n",
+    " * pyCharm lub linia komend, np. ``pip install --user flask`` lub ``python -m pip install --user flask``"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Wczytywanie z klawiatury"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "fragment"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "name = input(\"What's your name?\\n\")\n",
+    "print(\"Welcome home, {}.\".format(name))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "liczby = eval(input(\"Podaj liczby\"))\n",
+    "print(sum(liczby))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "slideshow": {
+     "slide_type": "slide"
+    }
+   },
+   "source": [
+    "## Co ominąłem?\n",
+    "\n",
+    " * klasy (jutro)\n",
+    " * podział programu na pliki (jutro)\n",
+    " "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "celltoolbar": "Slideshow",
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.6.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}

la/README.md

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+Link do arkusza z obecnością:
+
+https://docs.google.com/spreadsheets/d/1TxJSYM-voKJ7siCgtkCS77pSF0l7I-OtzfCrQdq9RtE/edit?usp=sharing

la/cw_3.py

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+def suma(*args): ## funkcja przejmuje wszystkie argumenty, ktore nie zostaly nazwane (arguments)
+    return sum(args)
+print(suma(1,2,3,4,5))
+
+def suma(x, *args): ### x bedzie 1, a reszta argumentow bedzie podstawiona do do args i wydzie 14
+    return sum(args)
+print(suma(1,2,3,4,5))
+
+def greet_me(**kwargs): ##key-word arguments
+    if kwargs is not None:
+        for key, value in kwargs.items():
+            print("%s == %s" %(key,value))
+greet_me(a=1, b=(3,4))
+
+def greet_me(z=None,**kwargs): ##key-word arguments; przydatne dla funkcji, ktore przyjmuja bardzo duzo argumentow
+    if kwargs is not None:
+        for key, value in kwargs.items():
+            print("%s == %s" %(key,value))
+greet_me(a=1, b=(3,4))
+
+plik = open("haslo.txt", 'r') ## r - read only
+for linia in plik.readlines():
+    print(linia.strip())
+print(plik.read())
+plik.close()
+
+plik = open("haslo.txt", 'r') ## r - read only
+for linia in plik.readlines():
+    print(linia.strip())
+print(plik.read())
+print(">>")
+plik.close()
+
+with open("haslo23.txt", 'w') as plik: ## write - zapis do pliku
+    for word in ('corect ', 'horse ', 'battery', 'staple'):
+        plik.write(word)
+    plik.write('\n')
+with open("haslo2.txt", 'w+') as plik:
+    plik.writelines([' '.join(('corect', 'horse', 'battery', 'staple'))])
+
+import os  ##ta biblioteka pozwala na operacje na systemie operacyjnym
+print(os.name)
+
+from os import getenv
+print('Nazwa uzytkownika: {}'.format(getenv("USER")))
+
+name = input("What's your name?\n")
+print("Welcome home, {}.".format(name))

la/haslo2.txt

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+corect horse battery staple

la/haslo23.txt

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+corect horse batterystaple