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

Code before:

    def _entries(self, channel_id):
        pager = ''
        for count in itertools.count(1):
            article_list = self._call_api(self.PROGRAM_LIST_API_URL % (channel_id, pager), channel_id, note='Paging #%d' % count)
            playlist_data = article_list.get('PlaylistData')
            if not playlist_data:
                break
            yield from playlist_data
            last = playlist_data[-1]
            pager = '&pid=%d&p_date=%s&play_count=%s' % (last['PlaylistId'], last['Published'], last['PlayCount'])

    def _real_extract(self, url):
        channel_id = self._match_id(url)
        articles = self._entries(channel_id)

        first_article = next(articles, None)  # need the first item to get some info
        title = traverse_obj(first_article, ('ChannelName', ), expected_type=compat_str)
        if not title:
            speaker_name = traverse_obj(first_article, ('SpeakerName', ), expected_type=compat_str)
            if speaker_name:
                title = 'Uploads from %s' % speaker_name
        if not title:
            title = 'Uploads from channel ID %s' % channel_id

        articles = itertools.chain([first_article], articles) if first_article else articles  # push back first item

        playlist = (
            self.url_result(smuggle_url('https://voicy.jp/channel/%s/%d' % (channel_id, value['PlaylistId']), value), VoicyIE.ie_key())
            for value in articles)
        return {
            '_type': 'playlist',
            'entries': playlist,
            'id': channel_id,
            'title': title,
            'channel': channel_id,
            'channel_id': channel_id,
        }


Review comment (suggestion):
```suggestion
        articles = itertools.chain([first_article], articles) if first_article else articles
```

Code after:

    def _entries(self, channel_id):
        pager = ''
        for count in itertools.count(1):
            article_list = self._call_api(self.PROGRAM_LIST_API_URL % (channel_id, pager), channel_id, note='Paging #%d' % count)
            playlist_data = article_list.get('PlaylistData')
            if not playlist_data:
                break
            yield from playlist_data
            last = playlist_data[-1]
            pager = '&pid=%d&p_date=%s&play_count=%s' % (last['PlaylistId'], last['Published'], last['PlayCount'])

    def _real_extract(self, url):
        channel_id = self._match_id(url)
        articles = self._entries(channel_id)

        first_article = next(articles, None)
        title = traverse_obj(first_article, ('ChannelName', ), expected_type=compat_str)
        speaker_name = traverse_obj(first_article, ('SpeakerName', ), expected_type=compat_str)
        if not title and speaker_name:
            title = 'Uploads from %s' % speaker_name
        if not title:
            title = 'Uploads from channel ID %s' % channel_id

        articles = itertools.chain([first_article], articles) if first_article else articles

        playlist = (
            self.url_result(smuggle_url('https://voicy.jp/channel/%s/%d' % (channel_id, value['PlaylistId']), value), VoicyIE.ie_key())
            for value in articles)
        return {
            '_type': 'playlist',
            'entries': playlist,
            'id': channel_id,
            'title': title,
            'channel': speaker_name,
            'channel_id': channel_id,
        }