code: def quick_url(comment):
      
      def to_id(fullname):
          return fullname.split('_', 1)[1]
      return ('http://www.reddit.com/r/{}/comments/{}/_/{}?context=3'
              .format(comment.subreddit.display_name, to_id(comment.link_id),
                      comment.id))
docs: Return the URL for the comment without fetching its submission.