replace dict access with try_get()

yt_dlp/extractor/youtube.py

@@ -3312,16 +3312,16 @@ def _extract_comment(self, view_model, entity, parent=None):
 
         info = {
             'id': comment_id,
-            'text': entity_payload['properties']['content']['content'],
-            'like_count': entity_payload['toolbar']['likeCountNotliked'],
+            'text': try_get(entity_payload, lambda x: x['properties']['content']['content'], str),
+            'like_count': str_to_int(try_get(entity_payload, lambda x: x['toolbar']['likeCountNotliked'], str)) or 0,
             'author_id': traverse_obj(entity_payload, ('author', 'channelId', {self.ucid_or_none})),
-            'author': entity_payload['author']['displayName'],
+            'author': try_get(entity_payload, lambda x: x['author']['displayName'], str),
             'author_thumbnail': traverse_obj(entity_payload, ('author', 'avatarThumbnailUrl', {url_or_none})),
             'parent': parent or 'root',
         }
 
         # Timestamp is an estimate calculated from the current time and time_text
-        time_text = entity_payload['properties']['publishedTime'] or ''
+        time_text = try_get(entity_payload, lambda x: x['properties']['publishedTime'], str) or ''
         timestamp = self._parse_time_text(time_text)
 
         info.update({
@@ -3331,9 +3331,14 @@ def _extract_comment(self, view_model, entity, parent=None):
         })
 
         info['author_url'] = urljoin(
-            'https://www.youtube.com', traverse_obj(entity_payload,
-                ('author', 'channelCommand', 'innertubeCommand', 'browseEndpoint', 'canonicalBaseUrl'),
-                expected_type=str, get_all=False))
+            'https://www.youtube.com',
+            traverse_obj(entity_payload,
+                         ('author',
+                          'channelCommand',
+                          'innertubeCommand',
+                          'browseEndpoint',
+                          'canonicalBaseUrl'),
+                         expected_type=str, get_all=False))
 
         author_is_uploader = traverse_obj(entity_payload, ('author', 'isCreator'))
         if author_is_uploader is not None:
@@ -3456,7 +3461,7 @@ def extract_thread(contents, entity_payloads):
                 else:
                     view_model = traverse_obj(comment_thread_renderer, ('commentViewModel', 'commentViewModel'))
                     if not view_model:
-                      view_model = content.get('commentViewModel')
+                        view_model = content.get('commentViewModel')
                     if not view_model:
                         continue
                     comment_id = view_model['commentId']