code: def get_authentication_cookies(session, class_name, username, password):
      
  
      # First, check if we already have the .coursera.org cookies.
      if session.cookies.get('CAUTH', domain=".coursera.org"):
          logging.debug('Already logged in on accounts.coursera.org.')
      else:
          login(session, username, password, class_name=class_name)
  
      try:
          session.cookies.clear('class.coursera.org', '/' + class_name)
      except KeyError:
          pass
  
      down_the_wabbit_hole(session, class_name)
  
      enough = do_we_have_enough_cookies(session.cookies, class_name)
  
      if not enough:
          raise AuthenticationFailed('Did not find necessary cookies.')
  
      logging.info('Found authentication cookies.')
docs: Get the necessary cookies to authenticate on class.coursera.org.
  
      To access the class pages we need two cookies on class.coursera.org:
          csrf_token, session