code: def comment(self, id_num):
          
          json = None
          if int(id_num) > 0:  # Might as well check that it's positive
              owner, repo = self.repository
              url = self._build_url('repos', owner, repo, 'issues', 'comments',
                                    str(id_num))
              json = self._json(self._get(url), 200)
          return IssueComment(json) if json else None
docs: Get a single comment by its id.
  
          The catch here is that id is NOT a simple number to obtain. If
          you were to look at the comments on issue #15 in
          sigmavirus24/Todo.txt-python, the first comment's id is 4150787.
  
          :param int id_num: (required), comment id, see example above
          :returns: :class:`IssueComment <github3.issues.comment.IssueComment>`