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

Code before:
        """
        is_playlist = bool(traverse_obj(
            data, ('metadata', 'playlistMetadataRenderer'), ('header', 'playlistHeaderRenderer')))
        if not is_playlist:
            return
        headers = self.generate_api_headers(
            ytcfg=ytcfg, account_syncid=self._extract_account_syncid(ytcfg, data),
            visitor_data=self._extract_visitor_data(data, ytcfg))
        query = {
            'params': 'wgYCCAA=',
            'browseId': f'VL{item_id}',
        }
        return self._extract_response(
            item_id=item_id, headers=headers, query=query,
            check_get_keys='contents', fatal=False, ytcfg=ytcfg,
            note='Redownloading playlist API JSON with unavailable videos')

    @functools.cached_property
    def skip_webpage(self):
        return 'webpage' in self._configuration_arg('skip', ie_key=YoutubeTabIE.ie_key())

    def _extract_webpage(self, url, item_id, fatal=True):
        webpage, data = None, None
        for retry in self.RetryManager(fatal=fatal):
            try:
                webpage = self._download_webpage(url, item_id, note='Downloading webpage', headers=self._webpage_headers)
                data = self.extract_yt_initial_data(item_id, webpage or '', fatal=fatal) or {}
            except ExtractorError as e:
                if isinstance(e.cause, network_exceptions):
                    if not isinstance(e.cause, HTTPError) or e.cause.status not in (403, 429):
                        retry.error = e
                        continue
                self._error_or_warning(e, fatal=fatal)
                break

            try:
                self._extract_and_report_alerts(data)
            except ExtractorError as e:
                self._error_or_warning(e, fatal=fatal)
                break

            # Sometimes youtube returns a webpage with incomplete ytInitialData
            # See: https://github.com/yt-dlp/yt-dlp/issues/116
            if not traverse_obj(data, 'contents', 'currentVideoEndpoint', 'onResponseReceivedActions'):
                retry.error = ExtractorError('Incomplete yt initial data received')
                data = None
                continue

        return webpage, data

    def _report_playlist_authcheck(self, ytcfg, fatal=True):

Review comment (suggestion):
```suggestion
                webpage = self._download_webpage(url, item_id, note='Downloading webpage', headers=self._generate_webpage_headers())
```

Code after:
        is_playlist = bool(traverse_obj(
            data, ('metadata', 'playlistMetadataRenderer'), ('header', 'playlistHeaderRenderer')))
        if not is_playlist:
            return
        headers = self.generate_api_headers(
            ytcfg=ytcfg, account_syncid=self._extract_account_syncid(ytcfg, data),
            visitor_data=self._extract_visitor_data(data, ytcfg))
        query = {
            'params': 'wgYCCAA=',
            'browseId': f'VL{item_id}',
        }
        return self._extract_response(
            item_id=item_id, headers=headers, query=query,
            check_get_keys='contents', fatal=False, ytcfg=ytcfg,
            note='Redownloading playlist API JSON with unavailable videos')

    @functools.cached_property
    def skip_webpage(self):
        return 'webpage' in self._configuration_arg('skip', ie_key=YoutubeTabIE.ie_key())

    def _extract_webpage(self, url, item_id, fatal=True):
        webpage, data = None, None
        for retry in self.RetryManager(fatal=fatal):
            try:
                webpage = self._download_webpage(url, item_id, note='Downloading webpage', headers=self._generate_webpage_headers())
                data = self.extract_yt_initial_data(item_id, webpage or '', fatal=fatal) or {}
            except ExtractorError as e:
                if isinstance(e.cause, network_exceptions):
                    if not isinstance(e.cause, HTTPError) or e.cause.status not in (403, 429):
                        retry.error = e
                        continue
                self._error_or_warning(e, fatal=fatal)
                break

            try:
                self._extract_and_report_alerts(data)
            except ExtractorError as e:
                self._error_or_warning(e, fatal=fatal)
                break

            # Sometimes youtube returns a webpage with incomplete ytInitialData
            # See: https://github.com/yt-dlp/yt-dlp/issues/116
            if not traverse_obj(data, 'contents', 'currentVideoEndpoint', 'onResponseReceivedActions'):
                retry.error = ExtractorError('Incomplete yt initial data received')
                data = None
                continue

        return webpage, data

    def _report_playlist_authcheck(self, ytcfg, fatal=True):
        """Use if failed to extract ytcfg (and data) from initial webpage"""