How to change the User Agent using Selenium and Python

I am having an error when changing the web driver user agent in Python using selenium.

Here is my code:

import requests
import json
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
driver = webdriver.Chrome(driver_path) driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36'})
#Error is on line above

Here is my error:

>>> driver = webdriver.Chrome(driver_path) driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent":"python 3.7", "platform":"Windows"}) 
  File "<stdin>", line 1
    driver = webdriver.Chrome(driver_path) driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent":"python 3.7", "platform":"Windows"})```

Solution 1:

Your code is just perfect. You simply have to write the line of code to change the user-agent in the next line. As an example:

  • Code Block:

    from selenium import webdriver
    
    driver = webdriver.Chrome(executable_path=r'C:\WebDrivers\chromedriver.exe')
    print(driver.execute_script("return navigator.userAgent;"))
    # Setting user agent as Chrome/83.0.4103.97
    driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36'})
    print(driver.execute_script("return navigator.userAgent;"))
    # Setting user agent as Chrome/83.0.4103.53
    driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.53 Safari/537.36'})
    print(driver.execute_script("return navigator.userAgent;"))
    driver.get('https://www.httpbin.org/headers')
    
  • Console Output:

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Safari/537.36
    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36
    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.53 Safari/537.36
    
  • Browser Snapshot:

useragent


Reference

You can find a couple of relevant detailed discussions in:

  • How to rotate various user agents using selenium python on each request
  • Selenium webdriver: Modifying navigator.webdriver flag to prevent selenium detection

Solution 2:

You should use driver options:

from selenium.webdriver.chrome.options import Options

options = Options()
options.add_argument("user-agent=[user-agent string]")

driver = webdriver.Chrome(executable_path='path', chrome_options=options)