Refactored to work with Python 3.9

yt_dlp/extractor/arte.py

@@ -284,16 +284,7 @@ class ArteTVPlaylistIE(ArteTVBaseIE):
         },
     }]
 
-    def _real_extract(self, url):
-        lang, playlist_id = self._match_valid_url(url).group('lang', 'id')
-        webpage = self._download_webpage(url, playlist_id)
-
-        unescape_func = lambda jstring: jstring.replace('\\"', '"').replace('\\\\', '\\')
-        playlist_data = self._search_json(r'\$L23.+?', webpage, 'series data',
-                                          playlist_id,
-                                          end_pattern=r'\],\[\[',
-                                          transform_source=unescape_func)
-
+    def _entries(self, playlist_data, playlist_id):
         playlist_item_filter = lambda _, v: re.match(rf'collection_(?:videos|subcollection)_{playlist_id}', v['code'])
         collections = traverse_obj(playlist_data,
                                    ('data',
@@ -303,20 +294,32 @@ class ArteTVPlaylistIE(ArteTVBaseIE):
                                     'data',
                                     ...))
 
-        entries = [{
+        for video in collections:
+            yield {
                 '_type': 'url_transparent',
-            'url': f'https://www.arte.tv{video['url']}',
+                'url': 'https://www.arte.tv' + video['url'],
                 'ie_key': ArteTVIE.ie_key(),
-            'id': video.get('id'),
+                'id': video['id'],
                 'title': video.get('title'),
                 'alt_title': video.get('subtitle'),
                 'duration': int_or_none(traverse_obj(video, ('duration'))),
                 'age_limit': int_or_none(traverse_obj(video, 'ageRating')),
-        } for video in collections]
+            }
 
-        return self.playlist_result(entries, playlist_id,
-                                    traverse_obj(playlist_data, ('data', 'metadata', 'title')),
-                                    traverse_obj(playlist_data, ('data', 'metadata', 'description')))
+    def _real_extract(self, url):
+        lang, playlist_id = self._match_valid_url(url).group('lang', 'id')
+        webpage = self._download_webpage(url, playlist_id)
+
+        unescape_func = lambda jstring: jstring.replace('\\"', '"').replace('\\\\', '\\')
+        json_data = self._search_json(r'\$L23.+?', webpage, 'series data',
+                                      playlist_id,
+                                      end_pattern=r'\],\[\[',
+                                      transform_source=unescape_func)
+
+        return self.playlist_result(self._entries(json_data, playlist_id),
+                                    playlist_id,
+                                    traverse_obj(json_data, ('data', 'metadata', 'title')),
+                                    traverse_obj(json_data, ('data', 'metadata', 'description')))
 
 
 class ArteTVCategoryIE(ArteTVBaseIE):