+ def _extract_set(self, playlist, token=None):
+ playlist_id = compat_str(playlist['id'])
+ tracks = playlist.get('tracks') or []
+ if not all([t.get('permalink_url') for t in tracks]) and token:
+ tracks = self._download_json(
+ self._API_V2_BASE + 'tracks', playlist_id,
+ 'Downloading tracks', query={
+ 'ids': ','.join([compat_str(t['id']) for t in tracks]),
+ 'playlistId': playlist_id,
+ 'playlistSecretToken': token,
+ })