'Show that a user can iterate over the comments on a gist.'

def test_comments(self):

    cassette_name = self.cassette_name('comments')
    with self.recorder.use_cassette(cassette_name):
        gist = self.gh.gist(3342247)
        assert (gist is not None)
        for comment in gist.comments():
            assert isinstance(comment, github3.gists.comment.GistComment)
