+ def _extract_course_info(self, webpage, video_id):
+ course = self._parse_json(
+ unescapeHTML(self._search_regex(
+ r'ng-init=["\'].*\bcourse=({.+?});', webpage, 'course', default='{}')),
+ video_id, fatal=False) or {}
+ course_id = course.get('id') or self._search_regex(
+ (r'"id"\s*:\s*(\d+)', r'data-course-id=["\'](\d+)'),
+ webpage, 'course id')
+ return course_id, course.get('title')
+