+ entries = [
+ self.url_result(
+ 'wistia:%s' % lesson['wistia_id'], ie='Wistia',
+ video_id=lesson['wistia_id'], video_title=lesson.get('title'))
+ for lesson in course['lessons'] if lesson.get('wistia_id')]
+
+ return self.playlist_result(
+ entries, playlist_id, course.get('title'),
+ course.get('description'))