diff options
Diffstat (limited to 'youtube/yt_data_extract.py')
| -rw-r--r-- | youtube/yt_data_extract.py | 92 |
1 files changed, 61 insertions, 31 deletions
diff --git a/youtube/yt_data_extract.py b/youtube/yt_data_extract.py index 1a5f21c..a347480 100644 --- a/youtube/yt_data_extract.py +++ b/youtube/yt_data_extract.py @@ -830,7 +830,8 @@ def check_missing_keys(object, *key_sequences): return None -def extract_plain_text(node, default=None): +def extract_plain_text(node, default=None, recover_urls=False): + '''default is the value returned if the extraction fails. If recover_urls is true, will attempt to fix Youtube's truncation of url text (most prominently seen in descriptions)''' if isinstance(node, str): return node @@ -839,10 +840,21 @@ def extract_plain_text(node, default=None): except (KeyError, TypeError): pass - try: - return ''.join(text_run['text'] for text_run in node['runs']) - except (KeyError, TypeError): - pass + if isinstance(node, dict) and 'runs' in node: + if recover_urls: + result = '' + for run in node['runs']: + url = default_multi_get(run, 'navigationEndpoint', 'urlEndpoint', 'url') + text = run.get('text', '') + # second condition is necessary because youtube makes other things into urls, such as hashtags, which we want to keep as text + if url is not None and (text.startswith('http://') or text.startswith('https://')): + url = remove_redirect(url) + result += url # youtube truncates the url text, use actual url instead + else: + result += text + return result + else: + return ''.join(text_run.get('text', '') for text_run in node['runs']) return default @@ -878,6 +890,11 @@ def extract_integer(string): except ValueError: return None +def update_if_not_none(dictionary, key, value): + '''Update dictionary[key] with value if value is not none''' + if key not in dictionary or value is not None: + dictionary[key] = value + def extract_metadata_row_info(video_renderer_info): # extract category and music list info = { @@ -908,6 +925,17 @@ def extract_metadata_row_info(video_renderer_info): return info +def extract_date(date_text): + if date_text is None: + return None + + date_text = date_text.replace(',', '').lower() + parts = date_text.split() + if len(parts) >= 3: + month, day, year = parts[-3:] + month = month_abbreviations.get(month[0:3]) # slicing in case they start writing out the full month name + if month and (re.fullmatch(r'\d\d?', day) is not None) and (re.fullmatch(r'\d{4}', year) is not None): + return year + '-' + month + '-' + day def extract_watch_info_mobile(top_level): info = {} @@ -927,9 +955,20 @@ def extract_watch_info_mobile(top_level): video_info = {} info.update(extract_metadata_row_info(video_info)) - #info['description'] = extract_formatted_text(video_info.get('description')) + info['description'] = extract_plain_text(video_info.get('description'), recover_urls=True) + info['view_count'] = extract_integer(extract_plain_text(video_info.get('expandedSubtitle'))) + info['author'] = extract_plain_text(default_multi_get(video_info, 'owner', 'slimOwnerRenderer', 'title')) + info['author_id'] = default_multi_get(video_info, 'owner', 'slimOwnerRenderer', 'navigationEndpoint', 'browseEndpoint', 'browseId') + info['title'] = extract_plain_text(video_info.get('title')) + info['live'] = 'watching' in extract_plain_text(video_info.get('expandedSubtitle')) + info['unlisted'] = False + for badge in video_info.get('badges', []): + if default_multi_get(badge, 'metadataBadgeRenderer', 'label') == 'Unlisted': + info['unlisted'] = True info['like_count'] = None info['dislike_count'] = None + if not info['published_date']: + info['published_date'] = extract_date(extract_plain_text(video_info.get('dateText', None))) for button in video_info.get('buttons', ()): button_renderer = button.get('slimMetadataToggleButtonRenderer', {}) @@ -982,17 +1021,8 @@ def extract_watch_info_desktop(top_level): video_info.update(list(renderer.values())[0]) info.update(extract_metadata_row_info(video_info)) - #info['description'] = extract_formatted_text(video_info.get('description', None)) - info['published_date'] = None - date_text = extract_plain_text(video_info.get('dateText', None)) - if date_text is not None: - date_text = util.left_remove(date_text.lower(), 'published on ').replace(',', '') - parts = date_text.split() - if len(parts) == 3: - month, day, year = date_text.split() - month = month_abbreviations.get(month[0:3]) # slicing in case they start writing out the full month name - if month and (re.fullmatch(r'\d\d?', day) is not None) and (re.fullmatch(r'\d{4}', year) is not None): - info['published_date'] = year + '-' + month + '-' + day + info['description'] = extract_plain_text(video_info.get('description', None), recover_urls=True) + info['published_date'] = extract_date(extract_plain_text(video_info.get('dateText', None))) likes_dislikes = default_multi_get(video_info, 'sentimentBar', 'sentimentBarRenderer', 'tooltip', default='').split('/') if len(likes_dislikes) == 2: @@ -1002,10 +1032,10 @@ def extract_watch_info_desktop(top_level): info['like_count'] = None info['dislike_count'] = None - #info['title'] = extract_plain_text(video_info.get('title', None)) - #info['author'] = extract_plain_text(default_multi_get(video_info, 'owner', 'videoOwnerRenderer', 'title')) - #info['author_id'] = default_multi_get(video_info, 'owner', 'videoOwnerRenderer', 'navigationEndpoint', 'browseEndpoint', 'browseId') - #info['view_count'] = extract_integer(extract_plain_text(default_multi_get(video_info, 'viewCount', 'videoViewCountRenderer', 'viewCount'))) + info['title'] = extract_plain_text(video_info.get('title', None)) + info['author'] = extract_plain_text(default_multi_get(video_info, 'owner', 'videoOwnerRenderer', 'title')) + info['author_id'] = default_multi_get(video_info, 'owner', 'videoOwnerRenderer', 'navigationEndpoint', 'browseEndpoint', 'browseId') + info['view_count'] = extract_integer(extract_plain_text(default_multi_get(video_info, 'viewCount', 'videoViewCountRenderer', 'viewCount'))) related = default_multi_get(top_level, 'response', 'contents', 'twoColumnWatchNextResults', 'secondaryResults', 'secondaryResults', 'results', default=[]) info['related_videos'] = [renderer_info(renderer) for renderer in related] @@ -1083,17 +1113,17 @@ def extract_watch_info(polymer_json): # stuff from videoDetails video_details = default_multi_get(top_level, 'playerResponse', 'videoDetails', default={}) - info['title'] = extract_plain_text(video_details.get('title')) - info['duration'] = extract_integer(video_details.get('lengthSeconds')) - info['view_count'] = extract_integer(video_details.get('viewCount')) + update_if_not_none(info, 'title', extract_plain_text(video_details.get('title'))) + update_if_not_none(info, 'duration', extract_integer(video_details.get('lengthSeconds'))) + update_if_not_none(info, 'view_count', extract_integer(video_details.get('viewCount'))) # videos with no description have a blank string - info['description'] = video_details.get('shortDescription') - info['id'] = video_details.get('videoId') - info['author'] = video_details.get('author') - info['author_id'] = video_details.get('channelId') - info['live'] = video_details.get('isLiveContent') - info['unlisted'] = not video_details.get('isCrawlable', True) - info['tags'] = video_details.get('keywords', []) + update_if_not_none(info, 'description', video_details.get('shortDescription')) + update_if_not_none(info, 'id', video_details.get('videoId')) + update_if_not_none(info, 'author', video_details.get('author')) + update_if_not_none(info, 'author_id', video_details.get('channelId')) + update_if_not_none(info, 'live', video_details.get('isLiveContent')) + update_if_not_none(info, 'unlisted', not video_details.get('isCrawlable', True)) + update_if_not_none(info, 'tags', video_details.get('keywords', [])) # other stuff info['author_url'] = 'https://www.youtube.com/channel/' + info['author_id'] if info['author_id'] else None |