# checking a your User-Agent !!!

agent = driver.execute_script("return navigator.userAgent")

print(agent)

print(driver.execute_script("return navigator.userAgent"))

from selenium import webdriver

from selenium.webdriver.chrome.options import Options

# for Chrome

opts = Options()

user_agent = "any agent"

opts.add_argument("user-agent=user_agent")

driver = webdriver.Chrome(chrome_options=opts)

# or

opts = Options()

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

# opts.add_argument("user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36")

driver = webdriver.Chrome(chrome_options=opts)

# User-Agent setup in Firefox !!!

from selenium import webdriver

profile = webdriver.FirefoxProfile()

profile.set_preference("general.useragent.override", "[user-agent string]")

# profile.set_preference("general.useragent.override", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:63.0) Gecko/20100101 Firefox/63.0")

driver = webdriver.Firefox(profile)

# way to pass driver path with other details

driver = webdriver.Firefox(profile, executable_path="path to geckodriver")

driver = webdriver.Chrome(chrome_options=opts, executable_path="path to chromedriver")