{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Jak stworzyć swojego robota?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Narzędzia uruchamiane z wiersza poleceń\n",
    "\n",
    "* wget\n",
    "* curl\n",
    "* aria2c"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/\n",
      "Loaded CA certificate '/etc/ssl/certs/ca-certificates.crt'\n",
      "Resolving laboratoria.wmi.amu.edu.pl (laboratoria.wmi.amu.edu.pl)... 150.254.78.3\n",
      "Connecting to laboratoria.wmi.amu.edu.pl (laboratoria.wmi.amu.edu.pl)|150.254.78.3|:443... connected.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 6269 (6.1K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/index.html'\n",
      "\n",
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      "\n",
      "2021-03-17 09:25:32 (4.19 MB/s) - 'laboratoria.wmi.amu.edu.pl/index.html' saved [6269/6269]\n",
      "\n",
      "Loading robots.txt; please ignore errors.\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/robots.txt\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 403 Forbidden\n",
      "2021-03-17 09:25:32 ERROR 403: Forbidden.\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/page-resources/wmi.png\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "Saving to: 'laboratoria.wmi.amu.edu.pl/page-resources/wmi.png'\n",
      "\n",
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      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/css/labs.css\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "\n",
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      "\n",
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      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/en/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "Saving to: 'laboratoria.wmi.amu.edu.pl/en/index.html'\n",
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      "\n",
      "2021-03-17 09:25:32 (3.04 MB/s) - 'laboratoria.wmi.amu.edu.pl/en/index.html' saved [5946/5946]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/page-resources/wmi_transparent.png\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "\n",
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      "\n",
      "2021-03-17 09:25:32 (2.62 MB/s) - 'laboratoria.wmi.amu.edu.pl/page-resources/wmi_transparent.png' saved [15034/15034]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/godziny-otwarcia/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "Saving to: 'laboratoria.wmi.amu.edu.pl/godziny-otwarcia/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   5.19K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (87.9 MB/s) - 'laboratoria.wmi.amu.edu.pl/godziny-otwarcia/index.html' saved [5317/5317]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/kontakt/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 4644 (4.5K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/kontakt/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   4.54K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (142 MB/s) - 'laboratoria.wmi.amu.edu.pl/kontakt/index.html' saved [4644/4644]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/pierwsze-kroki/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 6639 (6.5K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/pierwsze-kroki/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   6.48K  --.-KB/s    in 0.002s  \n",
      "\n",
      "2021-03-17 09:25:32 (3.61 MB/s) - 'laboratoria.wmi.amu.edu.pl/pierwsze-kroki/index.html' saved [6639/6639]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/przewodnik/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 5454 (5.3K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/przewodnik/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   5.33K  --.-KB/s    in 0.002s  \n",
      "\n",
      "2021-03-17 09:25:32 (2.97 MB/s) - 'laboratoria.wmi.amu.edu.pl/przewodnik/index.html' saved [5454/5454]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/regulamin-laboratoriow-komputerowych/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 14393 (14K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/regulamin-laboratoriow-komputerowych/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]  14.06K  --.-KB/s    in 0.005s  \n",
      "\n",
      "2021-03-17 09:25:32 (2.65 MB/s) - 'laboratoria.wmi.amu.edu.pl/regulamin-laboratoriow-komputerowych/index.html' saved [14393/14393]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/nie-odpowiadamy/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 4481 (4.4K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/nie-odpowiadamy/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   4.38K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (101 MB/s) - 'laboratoria.wmi.amu.edu.pl/nie-odpowiadamy/index.html' saved [4481/4481]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/laboratoria/oprogramowanie/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
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      "\n",
      "laboratoria.wmi.amu 100%[===================>]  12.52K  --.-KB/s    in 0.004s  \n",
      "\n",
      "2021-03-17 09:25:32 (2.93 MB/s) - 'laboratoria.wmi.amu.edu.pl/laboratoria/oprogramowanie/index.html' saved [12821/12821]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/uslugi/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 10688 (10K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/uslugi/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]  10.44K  --.-KB/s    in 0.004s  \n",
      "\n",
      "2021-03-17 09:25:32 (2.74 MB/s) - 'laboratoria.wmi.amu.edu.pl/uslugi/index.html' saved [10688/10688]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/uslugi-uniwersyteckie/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 4240 (4.1K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/uslugi-uniwersyteckie/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   4.14K  --.-KB/s    in 0.001s  \n",
      "\n",
      "2021-03-17 09:25:32 (3.27 MB/s) - 'laboratoria.wmi.amu.edu.pl/uslugi-uniwersyteckie/index.html' saved [4240/4240]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/problemy/docker/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 6326 (6.2K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/problemy/docker/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   6.18K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (182 MB/s) - 'laboratoria.wmi.amu.edu.pl/problemy/docker/index.html' saved [6326/6326]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/serwery-terminalowe/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 382 [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/serwery-terminalowe/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]     382  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (15.9 MB/s) - 'laboratoria.wmi.amu.edu.pl/serwery-terminalowe/index.html' saved [382/382]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/vpn/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 334 [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/vpn/index.html'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]     334  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (16.3 MB/s) - 'laboratoria.wmi.amu.edu.pl/vpn/index.html' saved [334/334]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/a126\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 301 Moved Permanently\n",
      "Location: https://laboratoria.wmi.amu.edu.pl/a126/ [following]\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/a126/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 3671 (3.6K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/a126'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   3.58K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (194 MB/s) - 'laboratoria.wmi.amu.edu.pl/a126' saved [3671/3671]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/irc\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 301 Moved Permanently\n",
      "Location: https://laboratoria.wmi.amu.edu.pl/irc/ [following]\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/irc/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 3946 (3.9K) [text/html]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/irc'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]   3.85K  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (243 MB/s) - 'laboratoria.wmi.amu.edu.pl/irc' saved [3946/3946]\n",
      "\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/godziny-otwarcia\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 301 Moved Permanently\n",
      "Location: https://laboratoria.wmi.amu.edu.pl/godziny-otwarcia/ [following]\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/godziny-otwarcia/\n",
      "Reusing existing connection to laboratoria.wmi.amu.edu.pl:443.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 5317 (5.2K) [text/html]\n",
      "laboratoria.wmi.amu.edu.pl/godziny-otwarcia: Is a directory\n",
      "\n",
      "Cannot write to 'laboratoria.wmi.amu.edu.pl/godziny-otwarcia' (Is a directory).\n",
      "--2021-03-17 09:25:32--  https://laboratoria.wmi.amu.edu.pl/js/fix.js\n",
      "Connecting to laboratoria.wmi.amu.edu.pl (laboratoria.wmi.amu.edu.pl)|150.254.78.3|:443... connected.\n",
      "HTTP request sent, awaiting response... 200 OK\n",
      "Length: 62 [application/javascript]\n",
      "Saving to: 'laboratoria.wmi.amu.edu.pl/js/fix.js'\n",
      "\n",
      "laboratoria.wmi.amu 100%[===================>]      62  --.-KB/s    in 0s      \n",
      "\n",
      "2021-03-17 09:25:32 (6.51 MB/s) - 'laboratoria.wmi.amu.edu.pl/js/fix.js' saved [62/62]\n",
      "\n",
      "FINISHED --2021-03-17 09:25:32--\n",
      "Total wall clock time: 0.3s\n",
      "Downloaded: 20 files, 115K in 0.03s (4.14 MB/s)\n"
     ]
    }
   ],
   "source": [
    "# Pobierz rekurencyjnie, z ograniczeniem do jednego poziomu rekurencji  \n",
    "! wget -r -l 1 https://laboratoria.wmi.amu.edu.pl/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "http://www.almanachmuszyny.pl/spisy/1991/AM1991_02_muszynski_zamek_prawda_i_legenda.pdf\n",
      "     out=1991-1.pdf\n",
      "http://www.almanachmuszyny.pl/spisy/1991/AM1991_03_muszyna_miasteczko_historyczne.pdf\n",
      "     out=1991-2.pdf\n",
      "\n",
      "03/17 09:31:54 [\u001b[1;32mNOTICE\u001b[0m] Downloading 2 item(s)\n",
      "\n",
      "03/17 09:31:55 [\u001b[1;32mNOTICE\u001b[0m] Download complete: /home/filipg/ext/amu/aitech-eks/wyk/aria2c-example/1991-1.pdf\n",
      "\n",
      "03/17 09:31:55 [\u001b[1;32mNOTICE\u001b[0m] Download complete: /home/filipg/ext/amu/aitech-eks/wyk/aria2c-example/1991-2.pdf\n",
      "\n",
      "Download Results:\n",
      "gid   |stat|avg speed  |path/URI\n",
      "======+====+===========+=======================================================\n",
      "3bf8a7|\u001b[1;32mOK\u001b[0m  |   458KiB/s|/home/filipg/ext/amu/aitech-eks/wyk/aria2c-example/1991-1.pdf\n",
      "e0c4c1|\u001b[1;32mOK\u001b[0m  |   677KiB/s|/home/filipg/ext/amu/aitech-eks/wyk/aria2c-example/1991-2.pdf\n",
      "\n",
      "Status Legend:\n",
      "(OK):download completed.\n"
     ]
    }
   ],
   "source": [
    "# aria2c pozwala łatwo pobrać listę adresów URL, dla każdego adresu można ustawić specyficzne opcje\n",
    "! (cd aria2c-example && cat aria.in)\n",
    "! (cd aria2c-example && aria2c -i aria.in)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Biblioteki/frameworki do tworzenia robotów\n",
    "\n",
    "### Python \n",
    "\n",
    "Użyteczne biblioteki: \n",
    "\n",
    "* urllib\n",
    "* request\n",
    "* Beautiful Soup (do parsowania HTML-a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[('/en/', 'English'), ('/', '\\n\\n      Laboratoria Komputerowe\\n      '), ('/', 'Strona główna'), ('/godziny-otwarcia/', 'Godziny otwarcia'), ('/kontakt/', 'Kontakt'), ('/pierwsze-kroki/', 'Pierwsze kroki'), ('/przewodnik/', 'Przewodnik po stronie'), ('/regulamin-laboratoriow-komputerowych/', 'Regulamin Wydziałowych Laboratoriów Komputerowych'), ('/nie-odpowiadamy/', 'Za co nie odpowiadamy'), ('/laboratoria/oprogramowanie/', 'Laboratoria'), ('/uslugi/', 'Usługi'), ('/uslugi-uniwersyteckie/', 'Usługi Uniwersyteckie'), ('/problemy/docker/', 'Problemy'), ('/serwery-terminalowe/', 'serwera terminalowego'), ('/vpn/', 'VPN'), ('https://help.wmi.amu.edu.pl/', 'https://help.wmi.amu.edu.pl/'), ('/a126', 'A1-26'), ('https://help.wmi.amu.edu.pl/', 'System helpdeskowy'), ('mailto:helpdesk@wmi.amu.edu.pl', 'helpdesk@wmi.amu.edu.pl'), ('/irc', 'users'), ('https://www.facebook.com/wmilabs/', 'Facebook'), ('/godziny-otwarcia', 'Godziny otwarcia')]\n"
     ]
    }
   ],
   "source": [
    "import urllib\n",
    "import requests\n",
    "from bs4 import BeautifulSoup\n",
    "\n",
    "url = 'https://laboratoria.wmi.amu.edu.pl/'\n",
    "response = requests.get(url)\n",
    "soup = BeautifulSoup(response.content, \"html.parser\")\n",
    "\n",
    "# wydobądź wszystkie linki (elementy A)\n",
    "links = soup.find_all('a')\n",
    "print([(link['href'], link.get_text()) for link in links])\n",
    "    "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## XPath\n",
    "\n",
    "XPath – język służący do adresowania części dokumentu XML.\n",
    "\n",
    "* `/html/body/div/p` – pełna ścieżka do wszystkich akapitów wewnątrz głównych elementów `<DIV>`\n",
    "* `//div/p` – wszystkie akapity w jakichkolwiek elementach `<DIV>`\n",
    "* `//a/@href` -  wartości atrybutu `href` dla wszystkich linków\n",
    "* `//p[@id=’foo’]/img[5]` - piąty (indeksowanie od 1!) obrazek wewnątrz akapitu o  identyfikatorze foo\n",
    "* `//p[img]/a` - linki w akapitach zawierających obrazek\n",
    "\n",
    "Czym się różni:\n",
    "\n",
    "* `//img[3]` od `(//img)[3]` ?\n",
    "* `//p[img]/a` od `//p[//img]/a` ?\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['/', '/godziny-otwarcia/', '/kontakt/', '/pierwsze-kroki/', '/przewodnik/', '/regulamin-laboratoriow-komputerowych/', '/nie-odpowiadamy/', '/laboratoria/oprogramowanie/', '/uslugi/', '/uslugi-uniwersyteckie/', '/problemy/docker/']\n"
     ]
    }
   ],
   "source": [
    "\n",
    "from urllib.request import urlopen\n",
    "from lxml import etree\n",
    "\n",
    "url = 'https://laboratoria.wmi.amu.edu.pl/'\n",
    "\n",
    "response = urlopen(url)\n",
    "htmlparser = etree.HTMLParser()\n",
    "tree = etree.parse(response, htmlparser)\n",
    "# linki z panelu\n",
    "links = tree.xpath(\"//div[@class='sidebar-menu']//a/@href\")\n",
    "print(links)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "## Jak poradzić sobie z dynamicznymi stronami?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### HtmlUnit\n",
    "\n",
    "```\n",
    "WebClient webClient = new WebClient();\n",
    "HtmlPage page = webClient.getPage(\"http://ceti.pl/?ceti=administracja\");\n",
    "\n",
    "HtmlForm form = page.getForms().get(2);\n",
    "\n",
    "HtmlTextInput loginField = form.getInputByName(\"login\");\n",
    "loginField.setValueAttribute(\"atrapa\");\n",
    "HtmlPasswordInput passField = form.getInputByName(\"pass\");\n",
    "passField.setValueAttribute(\"haslo1\");\n",
    "\n",
    "HtmlImageInput button = form.getInputByValue(\"OK\");\n",
    "HtmlPage page2 = (HtmlPage)button.click();\n",
    "\n",
    "HtmlPage page3 = webClient.getPage(\"https://tau4.ceti.pl/cgi-bin/logs-user-show.cgi\");\n",
    "System.out.println(page3.asXml());\n",
    "\n",
    "UnexpectedPage page4 = webClient.getPage(\"https://adm.tau4.ceti.pl/logs.zip\");\n",
    "InputStream istr = page4.getInputStream();\n",
    "```                                         \n",
    "                                         "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "## Selenium"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['https://www.python.org/community/sigs/guidelines', 'https://www.python.org/dev/peps/pep-0585/', 'https://www.python.org/community/lists', 'https://www.python.org/doc/essays/list2str', 'https://www.python.org/dev/core-mentorship', 'https://www.python.org/dev/peps/pep-3128/', 'https://www.python.org/dev/peps/pep-0204/', 'https://www.python.org/community/sigs/coordination', 'https://www.python.org/psf/committees', 'https://www.python.org/dev/peps/pep-0225/', 'https://www.python.org/dev/peps/pep-3132/', 'https://www.python.org/community/sigs/current/doc-sig/stext', 'https://www.python.org/dev/peps/pep-0202/', 'https://www.python.org/dev/peps/pep-0274/', 'https://www.python.org/dev/peps/pep-0469/', 'https://www.python.org/dev/peps/pep-0289/', 'https://www.python.org/dev/peps/pep-0270/', 'https://www.python.org/community/sigs/retired/string-sig', 'https://www.python.org/community/sigs/retired/progenv-sig', 'https://www.python.org/psf/records/board/minutes/2005-02-08']\n"
     ]
    }
   ],
   "source": [
    "# należy wcześniej uruchomić serwer selenium\n",
    "# wget https://selenium-release.storage.googleapis.com/3.141/selenium-server-standalone-3.141.59.jar\n",
    "# java -jar selenium-server-standalone-3.141.59.jar\n",
    "\n",
    "from selenium import webdriver\n",
    "from selenium.webdriver.common.desired_capabilities import DesiredCapabilities\n",
    "from selenium.webdriver.common.keys import Keys\n",
    "from selenium.webdriver.common.by import By\n",
    "\n",
    "driver = webdriver.Remote(\n",
    "   command_executor='http://127.0.0.1:4444/wd/hub',\n",
    "   desired_capabilities=DesiredCapabilities.CHROME)\n",
    "\n",
    "driver.get(\"http://www.python.org\")\n",
    "assert \"Python\" in driver.title\n",
    "elem = driver.find_element_by_name(\"q\")\n",
    "elem.clear()\n",
    "elem.send_keys(\"list\")\n",
    "elem.send_keys(Keys.RETURN)\n",
    "links = driver.find_elements(By.XPATH, '//h3/a')\n",
    "print([l.get_attribute('href') for l in links])\n",
    "driver.close()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Haskell i strzałki\n",
    "\n",
    "W języku Haskell można tworzyć roboty używając biblioteki HXT opartym na formalizmie strzałek (ang. _arrows_).\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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