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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 get_mod_log(self, subreddit, mod=None, action=None, *args, **kwargs):
 """Return a get_content generator for moderation log items. :param subreddit: Either a Subreddit object or the name of the subreddit to return the modlog for. :param mod: If given, only return the actions made by this moderator. Both a moderator name or Redditor object can be used here. :param action: If given, only return entries for the specified action. The additional parameters are passed directly into :meth:`.get_content`. Note: the `url` parameter cannot be altered. """

        params = kwargs.setdefault('params', {})
        if mod is not None:
            params['mod'] = six.text_type(mod)
        if action is not None:
            params['type'] = six.text_type(action)
        url = self.config['modlog'].format(subreddit=six.text_type(subreddit))
        return self.get_content(url, *args, **kwargs)