How to make Selenium not wait till full page load, which has a slow script?

Question

Selenium driver.get (url) wait till full page load. But a scraping page try to load some dead JS script. So my Python script wait for it and doesn't works few minutes. This problem can be on every pages of a site.

from selenium import webdriver

driver = webdriver.Chrome()
driver.get('https://www.cortinadecor.com/productos/17/estores-enrollables-screen/estores-screen-corti-3000')
# It try load: https://www.cetelem.es/eCommerceCalculadora/resources/js/eCalculadoraCetelemCombo.js 
driver.find_element_by_name('ANCHO').send_keys("100")

How to limit the time wait, block AJAX load of a file, or is other way?

Also I test my script in webdriver.Chrome(), but will use PhantomJS(), or probably Firefox(). So, if some method uses a change in browser settings, then it must be universal.

Energumen

Answer 1

When Selenium loads a page/url by default it follows a default configuration with pageLoadStrategy set to normal. To make Selenium not to wait for full page load we can configure the pageLoadStrategy. pageLoadStrategy supports 3 different values as follows:

1. normal (full page load)
2. eager (interactive)
3. none

Here is the code block to configure the pageLoadStrategy :

• Firefox :

  from selenium import webdriver
  from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
  
  caps = DesiredCapabilities().FIREFOX
  caps["pageLoadStrategy"] = "normal"  #  complete
  #caps["pageLoadStrategy"] = "eager"  #  interactive
  #caps["pageLoadStrategy"] = "none"
  driver = webdriver.Firefox(desired_capabilities=caps, executable_path=r'C:\path\to\geckodriver.exe')
  driver.get("http://google.com")
  

• Chrome :

  from selenium import webdriver
  from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
  
  caps = DesiredCapabilities().CHROME
  caps["pageLoadStrategy"] = "normal"  #  complete
  #caps["pageLoadStrategy"] = "eager"  #  interactive
  #caps["pageLoadStrategy"] = "none"
  driver = webdriver.Chrome(desired_capabilities=caps, executable_path=r'C:\path\to\chromedriver.exe')
  driver.get("http://google.com")
  

Note : pageLoadStrategy values normal, eager and none is a requirement as per WebDriver W3C Editor's Draft but pageLoadStrategy value as eager is still a WIP (Work In Progress) within ChromeDriver implementation. You can find a detailed discussion in “Eager” Page Load Strategy workaround for Chromedriver Selenium in Python

Hammons

It works in Firefox(). In Chrome() the "eager" option throws an error "unsupported". Run follows: caps = DesiredCapabilities().CHROME caps["pageLoadStrategy"] = "none" driver = webdriver.Chrome(desired_capabilities=caps) driver.get('href...') time.sleep(5) driver.find_element_by_name('ANCHO').send_keys("100") – Energumen

@Energumen Yes :) I know. What I suggested is from WebDriver's W3C recommendation. ChromeDriver will follow the suit soon. Thanks – Hammons

Instead of time.sleep, better to use driver.implicitly_wait – Daydream

Chrome still hasn't followed suit and it doesn't seem like they will – Finitude

@TimWachter Checkout my answer update and let me know your thoughts. – Hammons

@DebanjanB though caps["pageLoadStrategy"] = "none" gives back the control over driver in chrome, its quite useless if the page is still loading. You cant call driver.execute_script("window.stop();") it wont work in chrome, but ff works perfectly fine. – Demonolatry

What's the difference between using eager vs getting driver.page_source after the timeout exception ? – Orography

This answer need to be updated to selenium 4. – Passbook

Answer 2

Based on the selenium docs V4.0 it now seems to be like this:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
options = Options()
options.page_load_strategy = 'none'
driver = webdriver.Chrome(options=options)
driver.get("http://www.google.com")
driver.quit()

Allottee

Answer 3

@undetected Selenium answer works well but for the chrome, part its not working use the below answer for chrome

from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
capa = DesiredCapabilities.CHROME
capa["pageLoadStrategy"] = "none"
browser= webdriver.Chrome(desired_capabilities=capa,executable_path='PATH',options=options)

Sidsida