from __future__ import unicode_literals import re from .common import InfoExtractor from ..utils import ( unified_strdate, ) class KhanAcademyIE(InfoExtractor): _VALID_URL = r'^https?://(?:(?:www|api)\.)?khanacademy\.org/(?P<key>[^/]+)/(?:[^/]+/){,2}(?P<id>[^?#/]+)(?:$|[?#])' IE_NAME = 'KhanAcademy' _TESTS = [{ 'url': 'http://www.khanacademy.org/video/one-time-pad', 'md5': '7021db7f2d47d4fff89b13177cb1e8f4', 'info_dict': { 'id': 'one-time-pad', 'ext': 'mp4', 'title': 'The one-time pad', 'description': 'The perfect cipher', 'duration': 176, 'uploader': 'Brit Cruise', 'upload_date': '20120411', } }, { 'url': 'https://www.khanacademy.org/math/applied-math/cryptography', 'info_dict': { 'id': 'cryptography', 'title': 'Journey into cryptography', 'description': 'How have humans protected their secret messages through history? What has changed today?', }, 'playlist_mincount': 3, }] def _real_extract(self, url): m = re.match(self._VALID_URL, url) video_id = m.group('id') if m.group('key') == 'video': data = self._download_json( 'http://api.khanacademy.org/api/v1/videos/' + video_id, video_id, 'Downloading video info') upload_date = unified_strdate(data['date_added']) uploader = ', '.join(data['author_names']) return { '_type': 'url_transparent', 'url': data['url'], 'id': video_id, 'title': data['title'], 'thumbnail': data['image_url'], 'duration': data['duration'], 'description': data['description'], 'uploader': uploader, 'upload_date': upload_date, } else: # topic data = self._download_json( 'http://api.khanacademy.org/api/v1/topic/' + video_id, video_id, 'Downloading topic info') entries = [ { '_type': 'url', 'url': c['url'], 'id': c['id'], 'title': c['title'], } for c in data['children'] if c['kind'] in ('Video', 'Topic')] return { '_type': 'playlist', 'id': video_id, 'title': data['title'], 'description': data['description'], 'entries': entries, }