Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/twitcasting.py (Python)

Code before:

        return {
            'id': video_id,
            **base_dict,
            **infodict,
        }


class TwitCastingLiveIE(InfoExtractor):
    _VALID_URL = r'https?://(?:[^/?#]+\.)?twitcasting\.tv/(?P<id>[^/?#]+)/?(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://twitcasting.tv/ivetesangalo',
        'only_matching': True,
    }, {
        'url': 'https://twitcasting.tv/c:unusedlive',
        'expected_exception': 'UserNotLive',
    }]

    def _real_extract(self, url):
        uploader_id = self._match_id(url)
        self.to_screen(
            'Downloading live video of user {0}. '
            'Pass "https://twitcasting.tv/{0}/show" to download the history'.format(uploader_id))

        webpage = self._download_webpage(f'https://twitcasting.tv/{uploader_id}/show/', uploader_id)
        is_live = self._search_regex(
            r'(?s)(<span\s*class="tw-movie-thumbnail2-badge"\s*data-status="live">\s*LIVE)',
            webpage, 'is live?', default=None)
        if is_live:
            # get the first live; running live is always at the first
            current_live = int_or_none(self._search_regex(
                r'(?s)<a\s+class="tw-movie-thumbnail2"\s*href="/[^/]+/movie/(?P<video_id>\d+)"\s*>.+?</a>',
                webpage, 'current live ID', default=None, group='video_id'))
        if not is_live or not current_live:
            raise UserNotLive(video_id=uploader_id)
        return self.url_result(f'https://twitcasting.tv/{uploader_id}/movie/{current_live}', TwitCastingIE)


class TwitCastingUserIE(InfoExtractor):
    _VALID_URL = r'https?://(?:[^/?#]+\.)?twitcasting\.tv/(?P<id>[^/?#]+)/(:?show|archive)/?(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://twitcasting.tv/natsuiromatsuri/archive/',
        'info_dict': {
            'id': 'natsuiromatsuri',
            'title': 'natsuiromatsuri - Live History',
        },
        'playlist_mincount': 235,
    }, {
        'url': 'https://twitcasting.tv/noriyukicas/show',
        'only_matching': True,
    }]

Review comment (suggestion):
otherwise `current_live` could be unbound during the check later
```suggestion
        webpage = self._download_webpage(f'https://twitcasting.tv/{uploader_id}/show/', uploader_id)
        current_live = None
        is_live = self._search_regex(
```

Code after:
        return {
            'id': video_id,
            **base_dict,
            **infodict,
        }


class TwitCastingLiveIE(InfoExtractor):
    _VALID_URL = r'https?://(?:[^/?#]+\.)?twitcasting\.tv/(?P<id>[^/?#]+)/?(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://twitcasting.tv/ivetesangalo',
        'only_matching': True,
    }, {
        'url': 'https://twitcasting.tv/c:unusedlive',
        'expected_exception': 'UserNotLive',
    }]

    def _real_extract(self, url):
        uploader_id = self._match_id(url)
        self.to_screen(
            'Downloading live video of user {0}. '
            'Pass "https://twitcasting.tv/{0}/show" to download the history'.format(uploader_id))

        is_live = traverse_obj(self._download_json(
            f'https://frontendapi.twitcasting.tv/watch/user/{uploader_id}',
            uploader_id, 'Checking live status', data=b'', fatal=False), ('is_live', {bool}))
        if is_live is False:  # only raise here if API response was as expected
            raise UserNotLive(video_id=uploader_id)

        # Use /show/ page so that password-protected and members-only livestreams can be found
        webpage = self._download_webpage(
            f'https://twitcasting.tv/{uploader_id}/show/', uploader_id, 'Downloading live history')
        is_live = is_live or self._search_regex(
            r'(?s)(<span\s*class="tw-movie-thumbnail2-badge"\s*data-status="live">\s*LIVE)',
            webpage, 'is live?', default=False)
        # Current live is always the first match
        current_live = self._search_regex(
            r'(?s)<a\s+class="tw-movie-thumbnail2"\s+href="/[^/"]+/movie/(?P<video_id>\d+)"',
            webpage, 'current live ID', default=None, group='video_id')
        if not is_live or not current_live:
            raise UserNotLive(video_id=uploader_id)

        return self.url_result(f'https://twitcasting.tv/{uploader_id}/movie/{current_live}', TwitCastingIE)


class TwitCastingUserIE(InfoExtractor):
    _VALID_URL = r'https?://(?:[^/?#]+\.)?twitcasting\.tv/(?P<id>[^/?#]+)/(:?show|archive)/?(?:[#?]|$)'
    _TESTS = [{
        'url': 'https://twitcasting.tv/natsuiromatsuri/archive/',
        'info_dict': {
            'id': 'natsuiromatsuri',