code: def start(self, retry_limit=None):
          
          # Run tweepy stream
          wrapper_listener = TweepyWrapperListener(listener=self.listener)
          stream = tweepy.Stream(auth=self.client.tweepy_api.auth, listener=wrapper_listener)
  
          retry_counter = 0
          while retry_limit is None or retry_counter <= retry_limit:
              try:
                  retry_counter += 1
                  if not self.client.config.get('user_stream'):
                      logging.info('Listening to public stream')
                      stream.filter(follow=self.filter.follow, track=self.filter.track)
                  else:
                      if self.filter.follow:
                          logging.warning('Follow filters won\'t be used in user stream')
  
                      logging.info('Listening to user stream')
                      stream.userstream(track=self.filter.track)
              except AttributeError as e:
                  # Known Tweepy's issue https://github.com/tweepy/tweepy/issues/576
                  if "'NoneType' object has no attribute 'strip'" in str(e):
                      pass
                  else:
                      raise
docs: Try to connect to Twitter's streaming API.
  
          :param retry_limit: The maximum number of retries in case of failures. Default is None (unlimited)
          :raises :class:`~tweepy.error.TweepyError`: If there's some critical API error