class ImdbListIE(InfoExtractor):
IE_NAME = 'imdb:list'
IE_DESC = 'Internet Movie Database lists'
- _VALID_URL = r'https?://(?:www\.)?imdb\.com/list/ls(?P<id>\d+)(?!/videoplayer/vi\d+)'
+ _VALID_URL = r'https?://(?:www\.)?imdb\.com/list/ls(?P<id>\d{9})(?!/videoplayer/vi\d+)'
_TEST = {
'url': 'https://www.imdb.com/list/ls009921623/',
'info_dict': {