python unit test: assertEqual on same objects throwing AssertionError

I have a class as ``` class PlaylistManager(models.Manager): def add_playlist(self, name): playlist = Playlist(name=name) playlist.save() return playlist def get_playlist_with_id(self, id): return super(PlaylistManager, self).get_query_set().filter(pk=id) class Playlist(models.Model): name = models.CharField(max_length=30) date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) deleted = models.BooleanField(default=False) objects = PlaylistManager() # is a customer manager def __repr__(self): return '<Playlist name:%s, date_created:%s, date_modified:%s, deleted:%s>' % \ (self.name, self.date_created, self.date_modified, self.deleted) class Meta: db_table = 'playlists' ``` and i `test` as ``` def test_get_playlist(self): playlist = Utility.add_playlist() self.assertEqual(Playlist.objects.get_playlist_with_id(playlist.id), playlist) class Utility(): @staticmethod def add_playlist(playlist_name=PLAYLIST): return Playlist.objects.add_playlist(playlist_name) ``` When I run the test, I see error as ``` AssertionError: [<Playlist name:playlist, date_created:2012-07-18 19:54:12.265909+00:00, date_modified:2012-07-18 19:54:12.265955+00:00, deleted:False>] != <Playlist name:playlist, date_created:2012-07-18 19:54:12.265909+00:00, date_modified:2012-07-18 19:54:12.265955+00:00, deleted:False> ``` even when the two objects are same. Is there anything I am missing here?