code: def tweets_for(query_type, args, per_user=None):
      
      lookup = {"query_type": query_type, "value": args[0]}
      try:
          tweets = Tweet.objects.get_for(**lookup)
      except TwitterQueryException:
          return []
      if per_user is not None:
          _tweets = defaultdict(list)
          for tweet in tweets:
              if len(_tweets[tweet.user_name]) < per_user:
                  _tweets[tweet.user_name].append(tweet)
          tweets = sum(_tweets.values(), [])
          tweets.sort(key=lambda t: t.created_at, reverse=True)
      if len(args) > 1 and str(args[-1]).isdigit():
          tweets = tweets[:int(args[-1])]
      return tweets
docs: Retrieve tweets for a user, list or search term. The optional
      ``per_user`` arg limits the number of tweets per user, for
      example to allow a fair spread of tweets per user for a list.