pyppeteer VS web-scraping-with-python

The latest version of Pyppeteer, i.e., 1.0.2, can also be installed by executing pip3 install -U git+https://github.com/pyppeteer/pyppeteer@dev on the terminal.

Having async baked into Python both as a keyword and standard library has vastly opened up the number of use cases async will be used in where it is appropriate, one of my favorite libraries pyppeteer would have not existed in the easy nice way it can be used without asyncio: https://github.com/pyppeteer/pyppeteer

Yes, this is scraping. You need a legit new cookie issued by the site. The solution is to automate the going to get the cookies part. The most straight forward way to do this is probably using a headless browser through something like Selenium or pyppeteer.

Last I checked, pyppeteer wasn't a thing anymore, and I haven't tried Playwright but if it has a headless mode, thats what you want so you don't have a browser open.

pip install -U git+https://github.com/pyppeteer/pyppeteer@dev

The normal Puppeteer package is JavaScript, but I do see that there's a Python port called pyppeteer. I can't vouch for it specifically, but I imagine it's similarly easy to use as the JS version.

import asyncio import pytest from pyppeteer.errors import PageError from urllib.parse import quote import json import os import sys from os import environ from pyppeteer import connect, launch exec_platform = os.getenv('EXEC_PLATFORM') # Get username and access key of the LambdaTest Platform username = environ.get('LT_USERNAME', None) access_key = environ.get('LT_ACCESS_KEY', None) test1_url = 'https://ecommerce-playground.lambdatest.io/' test2_url = 'https://scrapingclub.com/exercise/list_infinite_scroll/' # Usecase - 1 # loc_ecomm_1 = ".order-1.col-lg-6 div:nth-of-type(1) > div:nth-of-type(1) > div:nth-of-type(1) > div:nth-of-type(1) > div:nth-of-type(1) div:nth-of-type(1) > img:nth-of-type(1)" loc_ecomm_1 = "[aria-label='1 / 2'] div:nth-of-type(1) > [alt='Nikon D300']" target_url_1 = "https://ecommerce-playground.lambdatest.io/index.php?route=product/product&product_id=63" # Usecase - 2 (Click on e-commerce sliding banner) loc_ecomm_2 = "[alt='Canon DSLR camera']" target_url_2 = "https://ecommerce-playground.lambdatest.io/index.php?route=product/product&product_id=30" # Usecase - 3 Automating interactions on https://scrapingclub.com/exercise/list_infinite_scroll/ loc_infinite_src_prod1 = ".grid .p-4 [href='/exercise/list_basic_detail/93926-C/']" target_url_3 = "https://scrapingclub.com/exercise/list_basic_detail/93926-C/" # Usecase - 4 Automating interactions on https://scrapingclub.com/exercise/list_infinite_scroll/ # when the images are lazy loaded loc_infinite_src_prod2 = "div:nth-of-type(31) > .p-4 [href='/exercise/list_basic_detail/94967-A/']" target_url_4 = "https://scrapingclub.com/exercise/list_basic_detail/94967-A/" # Set timeout in ms timeOut = 60000 async def scroll_to_element(page, selector): # Scroll until the element is detected await page.evaluateHandle( '''async (selector) => { const element = document.querySelector(selector); if (element) { element.scrollIntoView(); } }''', selector ) return selector async def scroll_carousel(page, scr_count): for scr in range(1, scr_count): elem_next_button = "#mz-carousel-213240 > ul li:nth-child(" + str(scr) + ")" await asyncio.sleep(1) elem_next_button = await page.querySelector(elem_next_button) await elem_next_button.click() # Replica of https://github.com/hjsblogger/web-scraping-with-python/blob/ # main/tests/beautiful-soup/test_infinite_scraping.py#L67C5-L80C18 async def scroll_end_of_page(page): start_height = await page.evaluate('document.documentElement.scrollHeight') while True: # Scroll to the bottom of the page await page.evaluate(f'window.scrollTo(0, {start_height})') # Wait for the content to load await asyncio.sleep(1) # Get the new scroll height scroll_height = await page.evaluate('document.documentElement.scrollHeight') if scroll_height == start_height: # If heights are the same, we reached the end of the page break # Add an additional wait await asyncio.sleep(2) start_height = scroll_height # Additional wait after scrolling await asyncio.sleep(2) @pytest.mark.asyncio @pytest.mark.order(1) async def test_lazy_load_ecomm_1(page): # The time out can be set using the setDefaultNavigationTimeout # It is primarily used for overriding the default page timeout of 30 seconds page.setDefaultNavigationTimeout(timeOut) await page.goto(test1_url, {'waitUntil': 'load', 'timeout': timeOut}) # Set the viewport - Apple MacBook Air 13-inch # Reference - https://codekbyte.com/devices-viewport-sizes/ # await page.setViewport({'width': 1440, 'height': 770}) await asyncio.sleep(2) if exec_platform == 'local': # Scroll until the element is detected elem_button = await scroll_to_element(page, loc_ecomm_1) # await page.click(elem_button) # Wait until the page is loaded # https://miyakogi.github.io/pyppeteer/reference.html#pyppeteer.page.Page.waitForNavigation navigationPromise = asyncio.ensure_future(page.waitForNavigation()) await page.click(elem_button) await navigationPromise elif exec_platform == 'cloud': elem_button = await page.waitForSelector(loc_ecomm_1, {'visible': True}) await asyncio.gather( elem_button.click(), page.waitForNavigation({'waitUntil': 'networkidle2', 'timeout': 30000}), ) # Assert if required, since the test is a simple one; we leave as is :D current_url = page.url print('Current URL is: ' + current_url) try: assert current_url == target_url_1 print("Test Success: Product checkout successful") except PageError as e: print("Test Failure: Could not checkout Product") print("Error Code" + str(e)) @pytest.mark.asyncio @pytest.mark.order(2) async def test_lazy_load_ecomm_2(page): carousel_len = 4 # The time out can be set using the setDefaultNavigationTimeout # It is primarily used for overriding the default page timeout of 30 seconds page.setDefaultNavigationTimeout(timeOut) await page.goto(test1_url, {'waitUntil': 'load', 'timeout': timeOut}) # Set the viewport - Apple MacBook Air 13-inch # Reference - https://codekbyte.com/devices-viewport-sizes/ # await page.setViewport({'width': 1440, 'height': 770}) await asyncio.sleep(2) # Approach 1: Directly click on the third button on the carousel # elem_carousel_banner = await page.querySelector("#mz-carousel-213240 > ul li:nth-child(3)") # await asyncio.sleep(1) # await elem_carousel_banner.click() # Approach 2 (Only for demo): Serially click on every button on carousel await scroll_carousel(page, carousel_len) await asyncio.sleep(1) # elem_prod_1 = await page.querySelector(loc_ecomm_2) elem_prod_1 = await page.waitForSelector(loc_ecomm_2, {'visible': True}) await asyncio.gather( elem_prod_1.click(), page.waitForNavigation({'waitUntil': 'networkidle2', 'timeout': 60000}), ) # Assert if required, since the test is a simple one; we leave as is :D current_url = page.url print('Current URL is: ' + current_url) try: assert current_url == target_url_2 print("Test Success: Product checkout successful") except PageError as e: print("Test Failure: Could not checkout Product") print("Error Code" + str(e)) @pytest.mark.asyncio @pytest.mark.order(3) async def test_lazy_load_infinite_scroll_1(page): # The time out can be set using the setDefaultNavigationTimeout # It is primarily used for overriding the default page timeout of 30 seconds page.setDefaultNavigationTimeout(timeOut) await page.goto(test2_url, {'waitUntil': 'load', 'timeout': timeOut}) # Set the viewport - Apple MacBook Air 13-inch # Reference - https://codekbyte.com/devices-viewport-sizes/ # await page.setViewport({'width': 1440, 'height': 770}) await asyncio.sleep(1) elem_prod1 = await page.querySelector(loc_infinite_src_prod1) await asyncio.gather( elem_prod1.click(), page.waitForNavigation({'waitUntil': 'networkidle2', 'timeout': 60000}), ) # await asyncio.sleep(1) # await elem_carousel_banner.click() # elem_button = scroll_to_element(page, loc_infinite_src_prod1) # print(elem_button) # await asyncio.sleep(2) # await elem_button.click() # Assert if required, since the test is a simple one; we leave as is :D current_url = page.url print('Current URL is: ' + current_url) try: assert current_url == target_url_3 print("Test Success: Product checkout successful") except PageError as e: print("Test Failure: Could not checkout Product") print("Error Code" + str(e)) @pytest.mark.asyncio @pytest.mark.order(4) async def test_lazy_load_infinite_scroll_2(page): # The time out can be set using the setDefaultNavigationTimeout # It is primarily used for overriding the default page timeout of 30 seconds page.setDefaultNavigationTimeout(timeOut) # Tested navigation using LambdaTest YouTube channel # await page.goto("https://www.youtube.com/@LambdaTest/videos", await page.goto(test2_url, {'waitUntil': 'load', 'timeout': timeOut}) # Set the viewport - Apple MacBook Air 13-inch # Reference - https://codekbyte.com/devices-viewport-sizes/ # await page.setViewport({'width': 1440, 'height': 770}) await asyncio.sleep(1) await scroll_end_of_page(page) await page.evaluate('window.scrollTo(0, 0)') await asyncio.sleep(1) # elem_prod = await page.querySelector(loc_infinite_src_prod2) # asyncio.sleep(1) # await asyncio.gather( # elem_prod.click(), # page.waitForNavigation({'waitUntil': 'load', 'timeout': 60000}), # ) elem_button = await scroll_to_element(page, loc_infinite_src_prod2) await asyncio.sleep(1) # await page.click(elem_button) await asyncio.gather( page.click(elem_button), page.waitForNavigation({'waitUntil': 'networkidle2', 'timeout': 60000}), ) # Assert if required, since the test is a simple one; we leave as is :D current_url = page.url print('Current URL is: ' + current_url) try: assert current_url == target_url_4 print("Test Success: Product checkout successful") except PageError as e: print("Test Failure: Could not checkout Product") print("Error Code" + str(e))

The helpers.py file contains the core implementation for scraping the LambdaTest YouTube channel.