{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Here is some important text you want to retrieve!\n",
      "A button to click!\n"
     ]
    }
   ],
   "source": [
    "from selenium import webdriver\n",
    "from selenium.webdriver.chrome.options import Options\n",
    "import time\n",
    "\n",
    "chrome_options = Options()\n",
    "chrome_options.add_argument(\"--headless\")\n",
    "driver = webdriver.Chrome(\n",
    "    executable_path='drivers/chromedriver', \n",
    "    options=chrome_options)\n",
    "driver.get('http://pythonscraping.com/pages/javascript/ajaxDemo.html')\n",
    "time.sleep(3)\n",
    "print(driver.find_element_by_id('content').text)\n",
    "driver.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Here is some important text you want to retrieve!\n",
      "A button to click!\n"
     ]
    }
   ],
   "source": [
    "from selenium import webdriver\n",
    "from selenium.webdriver.common.by import By\n",
    "from selenium.webdriver.support.ui import WebDriverWait\n",
    "from selenium.webdriver.support import expected_conditions as EC\n",
    "\n",
    "chrome_options = Options()\n",
    "chrome_options.add_argument(\"--headless\")\n",
    "driver = webdriver.Chrome(\n",
    "    executable_path='drivers/chromedriver',\n",
    "    options=chrome_options)\n",
    "\n",
    "driver.get('http://pythonscraping.com/pages/javascript/ajaxDemo.html')\n",
    "try:\n",
    "    element = WebDriverWait(driver, 10).until(\n",
    "                       EC.presence_of_element_located((By.ID, 'loadedButton')))\n",
    "finally:\n",
    "    print(driver.find_element_by_id('content').text)\n",
    "    driver.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Timing out after 10 seconds and returning\n",
      "\n",
      "The Destination Page!\n",
      "\n",
      "\n",
      "\n",
      "This is the page you are looking for!\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "from selenium import webdriver\n",
    "from selenium.webdriver.chrome.options import Options\n",
    "from selenium.webdriver.remote.webelement import WebElement\n",
    "from selenium.common.exceptions import StaleElementReferenceException\n",
    "import time\n",
    "\n",
    "def waitForLoad(driver):\n",
    "    elem = driver.find_element_by_tag_name(\"html\")\n",
    "    count = 0\n",
    "    while True:\n",
    "        count += 1\n",
    "        if count > 20:\n",
    "            print(\"Timing out after 10 seconds and returning\")\n",
    "            return\n",
    "        time.sleep(.5)\n",
    "        try:\n",
    "            elem == driver.find_element_by_tag_name(\"html\")\n",
    "        except StaleElementReferenceException:\n",
    "            return\n",
    "chrome_options = Options()\n",
    "chrome_options.add_argument(\"--headless\")\n",
    "driver = webdriver.Chrome(\n",
    "    executable_path='drivers/chromedriver',\n",
    "    options=chrome_options)\n",
    "driver.get(\"http://pythonscraping.com/pages/javascript/redirectDemo1.html\")\n",
    "waitForLoad(driver)\n",
    "print(driver.page_source)\n",
    "driver.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "This is the page you are looking for!\n"
     ]
    }
   ],
   "source": [
    "from selenium.webdriver.common.by import By\n",
    "from selenium.webdriver.support.ui import WebDriverWait\n",
    "from selenium.webdriver.chrome.options import Options\n",
    "from selenium.webdriver.support import expected_conditions as EC\n",
    "from selenium.common.exceptions import TimeoutException\n",
    "\n",
    "chrome_options = Options()\n",
    "chrome_options.add_argument(\"--headless\")\n",
    "driver = webdriver.Chrome(\n",
    "    executable_path='drivers/chromedriver', \n",
    "    options=chrome_options)\n",
    "driver.get('http://pythonscraping.com/pages/javascript/redirectDemo1.html')\n",
    "try:\n",
    "    bodyElement = WebDriverWait(driver, 15).until(EC.presence_of_element_located(\n",
    "        (By.XPATH, '//body[contains(text(), \"This is the page you are looking for!\")]')))\n",
    "    print(bodyElement.text)\n",
    "except TimeoutException:\n",
    "    print('Did not find the element')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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