Can Selenium interact with an existing browser session?

This is a pretty old feature request: Allow webdriver to attach to a running browser . So it's officially not supported.

However, there is some working code which claims to support this: https://web.archive.org/web/20171214043703/http://tarunlalwani.com/post/reusing-existing-browser-session-selenium-java/.

This is a duplicate answer **Reconnect to a driver in python selenium ** This is applicable on all drivers and for java api.

1. open a driver

driver = webdriver.Firefox()  #python

2. extract to session_id and _url from driver object.

url = driver.command_executor._url       #"http://127.0.0.1:60622/hub"
session_id = driver.session_id            #'4e167f26-dc1d-4f51-a207-f761eaf73c31'

3. Use these two parameter to connect to your driver.

driver = webdriver.Remote(command_executor=url,desired_capabilities={})
driver.close()   # this prevents the dummy browser
driver.session_id = session_id

And you are connected to your driver again.

driver.get("http://www.mrsmart.in")