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

Code before:
            },
            'contentCheckOk': True,
            'racyCheckOk': True
        }

    @staticmethod
    def _is_agegated(player_response):
        if traverse_obj(player_response, ('playabilityStatus', 'desktopLegacyAgeGateReason')):
            return True

        reasons = traverse_obj(player_response, ('playabilityStatus', ('status', 'reason')), default=[])
        AGE_GATE_REASONS = (
            'confirm your age', 'age-restricted', 'inappropriate',  # reason
            'age_verification_required', 'age_check_required',  # status
        )
        return any(expected in reason for expected in AGE_GATE_REASONS for reason in reasons)

    @staticmethod
    def _is_unplayable(player_response):
        return traverse_obj(player_response, ('playabilityStatus', 'status')) == 'UNPLAYABLE'

    def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg, identity_token, player_url, initial_pr, require_js_player):

        session_index = self._extract_session_index(player_ytcfg, master_ytcfg)
        syncid = self._extract_account_syncid(player_ytcfg, master_ytcfg, initial_pr)
        sts = self._extract_signature_timestamp(video_id, player_url, master_ytcfg, fatal=False) if require_js_player else None
        headers = self.generate_api_headers(
            player_ytcfg, identity_token, syncid,
            default_client=client, session_index=session_index)

        yt_query = {'videoId': video_id}
        yt_query.update(self._generate_player_context(sts))
        return self._extract_response(
            item_id=video_id, ep='player', query=yt_query,
            ytcfg=player_ytcfg, headers=headers, fatal=True,
            default_client=client,
            note='Downloading %s player API JSON' % client.replace('_', ' ').strip()
        ) or None

    def _get_requested_clients(self, url, smuggled_data):
        requested_clients = []
        allowed_clients = sorted(
            [client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'],
            key=lambda client: INNERTUBE_CLIENTS[client]['priority'], reverse=True)
        for client in self._configuration_arg('player_client'):
            if client in allowed_clients:
                requested_clients.append(client)
            elif client == 'all':
                requested_clients.extend(allowed_clients)
            else:
                self.report_warning(f'Skipping unsupported client {client}')

Review comment (refactor):
Is there really a need for `require_js_player`? Can't we just check if `player_url is None`? I also noticed `fatal=true` is never used for `_extract_signature_timestamp`

Code after:
            },
            'contentCheckOk': True,
            'racyCheckOk': True
        }

    @staticmethod
    def _is_agegated(player_response):
        if traverse_obj(player_response, ('playabilityStatus', 'desktopLegacyAgeGateReason')):
            return True

        reasons = traverse_obj(player_response, ('playabilityStatus', ('status', 'reason')), default=[])
        AGE_GATE_REASONS = (
            'confirm your age', 'age-restricted', 'inappropriate',  # reason
            'age_verification_required', 'age_check_required',  # status
        )
        return any(expected in reason for expected in AGE_GATE_REASONS for reason in reasons)

    @staticmethod
    def _is_unplayable(player_response):
        return traverse_obj(player_response, ('playabilityStatus', 'status')) == 'UNPLAYABLE'

    def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg, identity_token, player_url, initial_pr):

        session_index = self._extract_session_index(player_ytcfg, master_ytcfg)
        syncid = self._extract_account_syncid(player_ytcfg, master_ytcfg, initial_pr)
        sts = self._extract_signature_timestamp(video_id, player_url, master_ytcfg, fatal=False) if player_url else None
        headers = self.generate_api_headers(
            player_ytcfg, identity_token, syncid,
            default_client=client, session_index=session_index)

        yt_query = {'videoId': video_id}
        yt_query.update(self._generate_player_context(sts))
        return self._extract_response(
            item_id=video_id, ep='player', query=yt_query,
            ytcfg=player_ytcfg, headers=headers, fatal=True,
            default_client=client,
            note='Downloading %s player API JSON' % client.replace('_', ' ').strip()
        ) or None

    def _get_requested_clients(self, url, smuggled_data):
        requested_clients = []
        allowed_clients = sorted(
            [client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'],
            key=lambda client: INNERTUBE_CLIENTS[client]['priority'], reverse=True)
        for client in self._configuration_arg('player_client'):
            if client in allowed_clients:
                requested_clients.append(client)
            elif client == 'all':
                requested_clients.extend(allowed_clients)
            else:
                self.report_warning(f'Skipping unsupported client {client}')