docs: def print_tweets(tweets):
      """Print a list of tweets one by one separated by "="s.
  
      Parameters
      ----------
      tweets: list(dict)
          A list of tweets. Each tweet is a dict containing the username of the tweet's author,
          the post time, and the tweet body.
      """
      print('=' * 60)
      for index, tweet in enumerate(tweets):
          print('-' * 60)
          print('Tweet {}:'.format(index))
          print('Username:', tweet[pytwis_constants.USERNAME_KEY])
          print('Time:',
                datetime.datetime.fromtimestamp(int(tweet[pytwis_constants.TWEET_UNIXTIME_KEY])).\
                strftime('%Y-%m-%d %H:%M:%S'))
          print('Body:\n\t', tweet[pytwis_constants.TWEET_BODY_KEY])
          print('-' * 60)
      print('=' * 60)