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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def tweets_default(*args):
 """ Tweets for the default settings. """

    query_type = settings.TWITTER_DEFAULT_QUERY_TYPE
    args = (settings.TWITTER_DEFAULT_QUERY,
            settings.TWITTER_DEFAULT_NUM_TWEETS)
    per_user = None
    if query_type == QUERY_TYPE_LIST:
        per_user = 1
    return tweets_for(query_type, args, per_user=per_user)