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

Code before:
            self.report_warning(
                'unable to log in: bad username or password')
        self._login_status = login_ok

    def _real_extract(self, url):
        video_id = self._match_id(url)
        webpage = self._download_webpage(url, video_id)

        category_id = self._search_regex(r'categoryId=(.+)">', webpage, 'category ID')
        if category_id not in ('1', '2', '21', '22', '23', '24', '25'):
            raise ExtractorError('The URL does not contain audio.', expected=True)

        str_duration = self._search_regex(r'長さ：\s*(.+?)</p>', webpage, 'duration')
        str_filesize = self._search_regex(r'サイズ：\s*([0-9.]+?[KMG]?B)', webpage, 'size')
        str_viewcount = self._search_regex(r'閲覧数：\s*([0-9,]+)\s*</p>', webpage, 'view count', fatal=False)

        uploader_id = self._search_regex(r'<div\s+class="contents_creator">\s*<a\s+href="/(.*)"', webpage, 'uploader_id')
        uploader = self._search_regex(r'class="contents_creator_txt">(.*)</p', webpage, 'uploader')

        create_date = self._search_regex(r'投稿日：\s*(.+)</p>', webpage, 'timestamp')

        return {
            'id': video_id,
            'title': self._html_search_regex(r'<h1\s+class="contents_title">(.+?)</h1>', webpage, 'title', fatal=False),
            'description': self._html_search_regex(r'(?s)<div\s+class="contents_description">(.+?)</div>\s*<div', webpage, 'description', fatal=False),
            'uploader': uploader,
            'uploader_id': uploader_id,
            'timestamp': unified_timestamp(create_date, False),
            'duration': parse_duration(str_duration),
            'view_count': str_to_int(str_viewcount),
            'thumbnail': self._html_search_meta('twitter:image', webpage),

            'filesize_approx': parse_filesize(str_filesize.replace(',', '')),
            'url': self._search_regex(r'\"url\":\s*\"(.*?)\"', webpage, 'url'),
            'ext': 'mp3',
            'vcodec': 'none',
        }


Review comment (suggestion):
```suggestion
            'title': get_element_by_class('contents_title', webpage),
            'description': clean_html(get_element_by_class('contents_description', webpage)),
            'uploader': get_element_by_class('contents_creator_txt', webpage),
```

Also import `clean_html` and `get_element_by_class` from `..utils`

Code after:
                login_ok = False
        if not login_ok:
            self.report_warning(
                'unable to log in: bad username or password')
        self._login_status = login_ok

    def _real_extract(self, url):
        video_id = self._match_id(url)
        webpage = self._download_webpage(url, video_id)

        category_id = self._search_regex(r'categoryId=(.+)">', webpage, 'category ID')
        if category_id not in ('1', '2', '21', '22', '23', '24', '25'):
            raise ExtractorError('The URL does not contain audio.', expected=True)

        def extract_info(name, description):
            return self._search_regex(rf'{name}[：:]\s*([\d\s,:/]+)\s*</p>', webpage, description, default=None)

        return {
            'id': video_id,
            'title': clean_html(get_element_by_class('contents_title', webpage)),
            'description': clean_html(get_element_by_class('contents_description', webpage)),
            'uploader': clean_html(get_element_by_class('contents_creator_txt', webpage)),
            'uploader_id': self._search_regex(
                r'<a\s+href="/([^"]+)"', get_element_by_class('contents_creator', webpage), 'uploader id', default=None),
            'timestamp': unified_timestamp(extract_info('投稿日', 'timestamp'), False),
            'duration': parse_duration(extract_info('長さ', 'duration')),
            'view_count': str_to_int(extract_info('閲覧数', 'view count')),
            'thumbnail': self._html_search_meta('twitter:image', webpage),
            'filesize_approx': parse_filesize((extract_info('サイズ', 'size') or '').replace(',', '')),
            'url': self._search_regex(r'\"url\":\s*\"(.*?)\"', webpage, 'url'),
            'ext': 'mp3',
            'vcodec': 'none',
        }