code: def transfer_session_cookies_to_driver(self, domain=None):
          
          if not domain and self._last_requests_url:
              domain = tldextract.extract(self._last_requests_url).registered_domain
          elif not domain and not self._last_requests_url:
              raise Exception('Trying to transfer cookies to selenium without specifying a domain '
                              'and without having visited any page in the current session')
  
          # Transfer cookies
          for c in [c for c in self.cookies if domain in c.domain]:
              self.driver.ensure_add_cookie({'name': c.name, 'value': c.value, 'path': c.path,
                                             'expiry': c.expires, 'domain': c.domain})
docs: Copies the Session's cookies into the webdriver
  
          Using the 'domain' parameter we choose the cookies we wish to transfer, we only
          transfer the cookies which belong to that domain. The domain defaults to our last visited
          site if not provided.