[cleanup] Misc (#8598)

Authored by: bashonly, pukkandan, seproDev, Grub4K Co-authored-by: bashonly <bashonly@protonmail.com> Co-authored-by: pukkandan <pukkandan.ytdlp@gmail.com> Co-authored-by: sepro <4618135+seproDev@users.noreply.github.com>
2023-12-30 22:27:36 +01:00 · 2023-12-30 22:27:36 +01:00 · f9fb3ce86e
commit f9fb3ce86e
--- a/.github/workflows/core.yml
+++ b/.github/workflows/core.yml
@ -36,8 +36,8 @@ jobs:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
-        # CPython 3.11 is in quick-test
-        python-version: ['3.8', '3.9', '3.10', '3.12', pypy-3.8, pypy-3.10]
+        # CPython 3.8 is in quick-test
+        python-version: ['3.9', '3.10', '3.11', '3.12', pypy-3.8, pypy-3.10]
        include:
        # atleast one of each CPython/PyPy tests must be in windows
        - os: windows-latest
--- a/.github/workflows/quick-test.yml
+++ b/.github/workflows/quick-test.yml
@ -10,10 +10,10 @@ jobs:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
-    - name: Set up Python 3.11
+    - name: Set up Python 3.8
      uses: actions/setup-python@v4
      with:
-        python-version: '3.11'
+        python-version: '3.8'
    - name: Install test requirements
      run: pip install pytest -r requirements.txt
    - name: Run tests
--- a/Collaborators.md
+++ b/Collaborators.md
@ -29,6 +29,7 @@ You can also find lists of all [contributors of yt-dlp](CONTRIBUTORS) and [autho
 [![gh-sponsor](https://img.shields.io/badge/_-Github-white.svg?logo=github&labelColor=555555&style=for-the-badge)](https://github.com/sponsors/coletdjnz)

 * Improved plugin architecture
+* Rewrote the networking infrastructure, implemented support for `requests`
 * YouTube improvements including: age-gate bypass, private playlists, multiple-clients (to avoid throttling) and a lot of under-the-hood improvements
 * Added support for new websites YoutubeWebArchive, MainStreaming, PRX, nzherald, Mediaklikk, StarTV etc
 * Improved/fixed support for Patreon, panopto, gfycat, itv, pbs, SouthParkDE etc
@ -46,16 +47,17 @@ You can also find lists of all [contributors of yt-dlp](CONTRIBUTORS) and [autho

 ## [bashonly](https://github.com/bashonly)

-* `--update-to`, automated release, nightly builds
-* `--cookies-from-browser` support for Firefox containers
-* Added support for new websites Genius, Kick, NBCStations, Triller, VideoKen etc
-* Improved/fixed support for Anvato, Brightcove, Instagram, ParamountPlus, Reddit, SlidesLive, TikTok, Twitter, Vimeo etc
+* `--update-to`, self-updater rewrite, automated/nightly/master releases
+* `--cookies-from-browser` support for Firefox containers, external downloader cookie handling overhaul
+* Added support for new websites like Dacast, Kick, NBCStations, Triller, VideoKen, Weverse, WrestleUniverse etc
+* Improved/fixed support for Anvato, Brightcove, Reddit, SlidesLive, TikTok, Twitter, Vimeo etc


 ## [Grub4K](https://github.com/Grub4K)

-[![ko-fi](https://img.shields.io/badge/_-Ko--fi-red.svg?logo=kofi&labelColor=555555&style=for-the-badge)](https://ko-fi.com/Grub4K) [![gh-sponsor](https://img.shields.io/badge/_-Github-white.svg?logo=github&labelColor=555555&style=for-the-badge)](https://github.com/sponsors/Grub4K)
+[![gh-sponsor](https://img.shields.io/badge/_-Github-white.svg?logo=github&labelColor=555555&style=for-the-badge)](https://github.com/sponsors/Grub4K) [![ko-fi](https://img.shields.io/badge/_-Ko--fi-red.svg?logo=kofi&labelColor=555555&style=for-the-badge)](https://ko-fi.com/Grub4K)

-* `--update-to`, automated release, nightly builds
-* Rework internals like `traverse_obj`, various core refactors and bugs fixes
-* Helped fix crunchyroll, Twitter, wrestleuniverse, wistia, slideslive etc
+* `--update-to`, self-updater rewrite, automated/nightly/master releases
+* Reworked internals like `traverse_obj`, various core refactors and bugs fixes
+* Implemented proper progress reporting for parallel downloads
+* Improved/fixed/added Bundestag, crunchyroll, pr0gramm, Twitter, WrestleUniverse etc
--- a/README.md
+++ b/README.md
@ -159,6 +159,7 @@ Some of yt-dlp's default options are different from that of youtube-dl and youtu
 * yt-dlp versions between 2021.09.01 and 2023.01.02 applies `--match-filter` to nested playlists. This was an unintentional side-effect of [8f18ac](https://github.com/yt-dlp/yt-dlp/commit/8f18aca8717bb0dd49054555af8d386e5eda3a88) and is fixed in [d7b460](https://github.com/yt-dlp/yt-dlp/commit/d7b460d0e5fc710950582baed2e3fc616ed98a80). Use `--compat-options playlist-match-filter` to revert this
 * yt-dlp versions between 2021.11.10 and 2023.06.21 estimated `filesize_approx` values for fragmented/manifest formats. This was added for convenience in [f2fe69](https://github.com/yt-dlp/yt-dlp/commit/f2fe69c7b0d208bdb1f6292b4ae92bc1e1a7444a), but was reverted in [0dff8e](https://github.com/yt-dlp/yt-dlp/commit/0dff8e4d1e6e9fb938f4256ea9af7d81f42fd54f) due to the potentially extreme inaccuracy of the estimated values. Use `--compat-options manifest-filesize-approx` to keep extracting the estimated values
 * yt-dlp uses modern http client backends such as `requests`. Use `--compat-options prefer-legacy-http-handler` to prefer the legacy http handler (`urllib`) to be used for standard http requests.
+* The sub-module `swfinterp` is removed.

 For ease of use, a few more compat options are available:

@ -299,7 +300,7 @@ While all the other dependencies are optional, `ffmpeg` and `ffprobe` are highly

 * [**pycryptodomex**](https://github.com/Legrandin/pycryptodome)\* - For decrypting AES-128 HLS streams and various other data. Licensed under [BSD-2-Clause](https://github.com/Legrandin/pycryptodome/blob/master/LICENSE.rst)
 * [**phantomjs**](https://github.com/ariya/phantomjs) - Used in extractors where javascript needs to be run. Licensed under [BSD-3-Clause](https://github.com/ariya/phantomjs/blob/master/LICENSE.BSD)
-* [**secretstorage**](https://github.com/mitya57/secretstorage) - For `--cookies-from-browser` to access the **Gnome** keyring while decrypting cookies of **Chromium**-based browsers on **Linux**. Licensed under [BSD-3-Clause](https://github.com/mitya57/secretstorage/blob/master/LICENSE)
+* [**secretstorage**](https://github.com/mitya57/secretstorage)\* - For `--cookies-from-browser` to access the **Gnome** keyring while decrypting cookies of **Chromium**-based browsers on **Linux**. Licensed under [BSD-3-Clause](https://github.com/mitya57/secretstorage/blob/master/LICENSE)
 * Any external downloader that you want to use with `--downloader`

 ### Deprecated
--- a/devscripts/changelog_override.json
+++ b/devscripts/changelog_override.json
@ -114,5 +114,11 @@
        "action": "add",
        "when": "f04b5bedad7b281bee9814686bba1762bae092eb",
        "short": "[priority] Security: [[CVE-2023-46121](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46121)] Patch [Generic Extractor MITM Vulnerability via Arbitrary Proxy Injection](https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-3ch3-jhc6-5r8x)\n\t- Disallow smuggling of arbitrary `http_headers`; extractors now only use specific headers"
+    },
+    {
+        "action": "change",
+        "when": "15f22b4880b6b3f71f350c64d70976ae65b9f1ca",
+        "short": "[webvtt] Allow spaces before newlines for CueBlock (#7681)",
+        "authors": ["TSRBerry"]
    }
 ]
--- a/devscripts/make_changelog.py
+++ b/devscripts/make_changelog.py
@ -40,20 +40,6 @@ class CommitGroup(enum.Enum):
        return {
            name: group
            for group, names in {
-                cls.CORE: {
-                    'aes',
-                    'cache',
-                    'compat_utils',
-                    'compat',
-                    'cookies',
-                    'dependencies',
-                    'formats',
-                    'jsinterp',
-                    'outtmpl',
-                    'plugins',
-                    'update',
-                    'utils',
-                },
                cls.MISC: {
                    'build',
                    'ci',
@ -404,9 +390,9 @@ class CommitRange:
            if not group:
                if self.EXTRACTOR_INDICATOR_RE.search(commit.short):
                    group = CommitGroup.EXTRACTOR
+                    logger.error(f'Assuming [ie] group for {commit.short!r}')
                else:
-                    group = CommitGroup.POSTPROCESSOR
-                logger.warning(f'Failed to map {commit.short!r}, selected {group.name.lower()}')
+                    group = CommitGroup.CORE

            commit_info = CommitInfo(
                details, sub_details, message.strip(),
--- a/devscripts/make_issue_template.py
+++ b/devscripts/make_issue_template.py
@ -9,11 +9,7 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

 import re

-from devscripts.utils import (
-    get_filename_args,
-    read_file,
-    write_file,
-)
+from devscripts.utils import get_filename_args, read_file, write_file

 VERBOSE_TMPL = '''
  - type: checkboxes
--- a/requirements.txt
+++ b/requirements.txt
@ -1,6 +1,5 @@
 mutagen
 pycryptodomex
-websockets
 brotli; implementation_name=='cpython'
 brotlicffi; implementation_name!='cpython'
 certifi
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@ -730,7 +730,7 @@ class TestYoutubeDL(unittest.TestCase):
                self.assertEqual(got_dict.get(info_field), expected, info_field)
            return True

-        test('%()j', (expect_same_infodict, str))
+        test('%()j', (expect_same_infodict, None))

        # NA placeholder
        NA_TEST_OUTTMPL = '%(uploader_date)s-%(width)d-%(x|def)s-%(id)s.%(ext)s'
--- a/test/test_update.py
+++ b/test/test_update.py
@ -9,7 +9,7 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


 from test.helper import FakeYDL, report_warning
-from yt_dlp.update import Updater, UpdateInfo
+from yt_dlp.update import UpdateInfo, Updater


 # XXX: Keep in sync with yt_dlp.update.UPDATE_SOURCES
--- a/test/test_utils.py
+++ b/test/test_utils.py
@ -2110,6 +2110,8 @@ Line 1
        self.assertEqual(traverse_obj(_TEST_DATA, (..., {str_or_none})),
                         [item for item in map(str_or_none, _TEST_DATA.values()) if item is not None],
                         msg='Function in set should be a transformation')
+        self.assertEqual(traverse_obj(_TEST_DATA, ('fail', {lambda _: 'const'})), 'const',
+                         msg='Function in set should always be called')
        if __debug__:
            with self.assertRaises(Exception, msg='Sets with length != 1 should raise in debug'):
                traverse_obj(_TEST_DATA, set())
--- a/yt-dlp.cmd
+++ b/yt-dlp.cmd
@ -1 +1 @@
-@py -bb -Werror -Xdev "%~dp0yt_dlp\__main__.py" %*
+@py -Werror -Xdev "%~dp0yt_dlp\__main__.py" %*
--- a/yt-dlp.sh
+++ b/yt-dlp.sh
@ -1,2 +1,2 @@
 #!/usr/bin/env sh
-exec "${PYTHON:-python3}" -bb -Werror -Xdev "$(dirname "$(realpath "$0")")/yt_dlp/__main__.py" "$@"
+exec "${PYTHON:-python3}" -Werror -Xdev "$(dirname "$(realpath "$0")")/yt_dlp/__main__.py" "$@"
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@ -60,7 +60,13 @@ from .postprocessor import (
    get_postprocessor,
 )
 from .postprocessor.ffmpeg import resolve_mapping as resolve_recode_mapping
-from .update import REPOSITORY, _get_system_deprecation, _make_label, current_git_head, detect_variant
+from .update import (
+    REPOSITORY,
+    _get_system_deprecation,
+    _make_label,
+    current_git_head,
+    detect_variant,
+)
 from .utils import (
    DEFAULT_OUTTMPL,
    IDENTITY,
--- a/yt_dlp/extractor/banbye.py
+++ b/yt_dlp/extractor/banbye.py
@ -152,7 +152,7 @@ class BanByeChannelIE(BanByeBaseIE):
                'sort': 'new',
                'limit': self._PAGE_SIZE,
                'offset': page_num * self._PAGE_SIZE,
-            }, note=f'Downloading page {page_num+1}')
+            }, note=f'Downloading page {page_num + 1}')
            return [
                self.url_result(f"{self._VIDEO_BASE}/{video['_id']}", BanByeIE)
                for video in data['items']
--- a/yt_dlp/extractor/duoplay.py
+++ b/yt_dlp/extractor/duoplay.py
@ -53,21 +53,6 @@ class DuoplayIE(InfoExtractor):
            'episode_id': 14,
            'release_year': 2010,
        },
-    }, {
-        'note': 'Movie',
-        'url': 'https://duoplay.ee/4325/naljamangud',
-        'md5': '2b0bcac4159a08b1844c2bfde06b1199',
-        'info_dict': {
-            'id': '4325',
-            'ext': 'mp4',
-            'title': 'Näljamängud',
-            'thumbnail': r're:https://.+\.jpg(?:\?c=\d+)?$',
-            'description': 'md5:fb35f5eb2ff46cdb82e4d5fbe7b49a13',
-            'cast': ['Jennifer Lawrence', 'Josh Hutcherson', 'Liam Hemsworth'],
-            'upload_date': '20231109',
-            'timestamp': 1699552800,
-            'release_year': 2012,
-        },
    }, {
        'note': 'Movie without expiry',
        'url': 'https://duoplay.ee/5501/pilvede-all.-neljas-ode',
--- a/yt_dlp/extractor/floatplane.py
+++ b/yt_dlp/extractor/floatplane.py
@ -173,8 +173,8 @@ class FloatplaneIE(InfoExtractor):
                'formats': formats,
            })

-        uploader_url = format_field(traverse_obj(
-            post_data, 'creator'), 'urlname', 'https://www.floatplane.com/channel/%s/home', default=None)
+        uploader_url = format_field(
+            post_data, [('creator', 'urlname')], 'https://www.floatplane.com/channel/%s/home') or None
        channel_url = urljoin(f'{uploader_url}/', traverse_obj(post_data, ('channel', 'urlname')))

        post_info = {
@ -248,7 +248,7 @@ class FloatplaneChannelIE(InfoExtractor):
        for post in page_data or []:
            yield self.url_result(
                f'https://www.floatplane.com/post/{post["id"]}',
-                ie=FloatplaneIE, video_id=post['id'], video_title=post.get('title'),
+                FloatplaneIE, id=post['id'], title=post.get('title'),
                release_timestamp=parse_iso8601(post.get('releaseDate')))

    def _real_extract(self, url):
@ -264,5 +264,5 @@ class FloatplaneChannelIE(InfoExtractor):

        return self.playlist_result(OnDemandPagedList(functools.partial(
            self._fetch_page, display_id, creator_data['id'], channel_data.get('id')), self._PAGE_SIZE),
-            display_id, playlist_title=channel_data.get('title') or creator_data.get('title'),
-            playlist_description=channel_data.get('about') or creator_data.get('about'))
+            display_id, title=channel_data.get('title') or creator_data.get('title'),
+            description=channel_data.get('about') or creator_data.get('about'))
--- a/yt_dlp/extractor/generic.py
+++ b/yt_dlp/extractor/generic.py
@ -35,8 +35,8 @@ from ..utils import (
    unified_timestamp,
    unsmuggle_url,
    update_url_query,
-    urlhandle_detect_ext,
    url_or_none,
+    urlhandle_detect_ext,
    urljoin,
    variadic,
    xpath_attr,
--- a/yt_dlp/extractor/panopto.py
+++ b/yt_dlp/extractor/panopto.py
@ -536,7 +536,7 @@ class PanoptoListIE(PanoptoBaseIE):
        }

        response = self._call_api(
-            base_url, '/Services/Data.svc/GetSessions', f'{display_id} page {page+1}',
+            base_url, '/Services/Data.svc/GetSessions', f'{display_id} page {page + 1}',
            data={'queryParameters': params}, fatal=False)

        for result in get_first(response, 'Results', default=[]):
--- a/yt_dlp/extractor/radiofrance.py
+++ b/yt_dlp/extractor/radiofrance.py
@ -264,7 +264,7 @@ class RadioFranceLiveIE(RadioFranceBaseIE):
        }


-class RadioFrancePlaylistBase(RadioFranceBaseIE):
+class RadioFrancePlaylistBaseIE(RadioFranceBaseIE):
    """Subclasses must set _METADATA_KEY"""

    def _call_api(self, content_id, cursor, page_num):
@ -308,7 +308,7 @@ class RadioFrancePlaylistBase(RadioFranceBaseIE):
            })})


-class RadioFrancePodcastIE(RadioFrancePlaylistBase):
+class RadioFrancePodcastIE(RadioFrancePlaylistBaseIE):
    _VALID_URL = rf'''(?x)
        {RadioFranceBaseIE._VALID_URL_BASE}
        /(?:{RadioFranceBaseIE._STATIONS_RE})
@ -369,7 +369,7 @@ class RadioFrancePodcastIE(RadioFrancePlaylistBase):
            note=f'Downloading page {page_num}', query={'pageCursor': cursor})


-class RadioFranceProfileIE(RadioFrancePlaylistBase):
+class RadioFranceProfileIE(RadioFrancePlaylistBaseIE):
    _VALID_URL = rf'{RadioFranceBaseIE._VALID_URL_BASE}/personnes/(?P<id>[\w-]+)'

    _TESTS = [{
--- a/yt_dlp/extractor/wordpress.py
+++ b/yt_dlp/extractor/wordpress.py
@ -70,7 +70,7 @@ class WordpressPlaylistEmbedIE(InfoExtractor):
                'height': int_or_none(traverse_obj(track, ('dimensions', 'original', 'height'))),
                'width': int_or_none(traverse_obj(track, ('dimensions', 'original', 'width'))),
            } for track in traverse_obj(playlist_json, ('tracks', ...), expected_type=dict)]
-            yield self.playlist_result(entries, self._generic_id(url) + f'-wp-playlist-{i+1}', 'Wordpress Playlist')
+            yield self.playlist_result(entries, self._generic_id(url) + f'-wp-playlist-{i + 1}', 'Wordpress Playlist')


 class WordpressMiniAudioPlayerEmbedIE(InfoExtractor):
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@ -5297,6 +5297,7 @@ class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
            # 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
--- a/yt_dlp/networking/init.py
+++ b/yt_dlp/networking/init.py
@ -28,4 +28,3 @@ except ImportError:
    pass
 except Exception as e:
    warnings.warn(f'Failed to import "websockets" request handler: {e}' + bug_reports_message())
-
--- a/yt_dlp/networking/_helper.py
+++ b/yt_dlp/networking/_helper.py
@ -219,7 +219,7 @@ def _socket_connect(ip_addr, timeout, source_address):
            sock.bind(source_address)
        sock.connect(sa)
        return sock
-    except socket.error:
+    except OSError:
        sock.close()
        raise

@ -237,7 +237,7 @@ def create_socks_proxy_socket(dest_addr, proxy_args, proxy_ip_addr, timeout, sou
            sock.bind(source_address)
        sock.connect(dest_addr)
        return sock
-    except socket.error:
+    except OSError:
        sock.close()
        raise

@ -255,7 +255,7 @@ def create_connection(
    host, port = address
    ip_addrs = socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM)
    if not ip_addrs:
-        raise socket.error('getaddrinfo returns an empty list')
+        raise OSError('getaddrinfo returns an empty list')
    if source_address is not None:
        af = socket.AF_INET if ':' not in source_address[0] else socket.AF_INET6
        ip_addrs = [addr for addr in ip_addrs if addr[0] == af]
@ -272,7 +272,7 @@ def create_connection(
            # https://bugs.python.org/issue36820
            err = None
            return sock
-        except socket.error as e:
+        except OSError as e:
            err = e

    try:
--- a/yt_dlp/networking/_requests.py
+++ b/yt_dlp/networking/_requests.py
@ -188,6 +188,7 @@ class RequestsSession(requests.sessions.Session):
    """
    Ensure unified redirect method handling with our urllib redirect handler.
    """
+
    def rebuild_method(self, prepared_request, response):
        new_method = get_redirect_method(prepared_request.method, response.status_code)

@ -218,6 +219,7 @@ class Urllib3LoggingFilter(logging.Filter):

 class Urllib3LoggingHandler(logging.Handler):
    """Redirect urllib3 logs to our logger"""
+
    def __init__(self, logger, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._logger = logger
@ -367,7 +369,7 @@ class SocksHTTPConnection(urllib3.connection.HTTPConnection):
                self, f'Connection to {self.host} timed out. (connect timeout={self.timeout})') from e
        except SocksProxyError as e:
            raise urllib3.exceptions.ProxyError(str(e), e) from e
-        except (OSError, socket.error) as e:
+        except OSError as e:
            raise urllib3.exceptions.NewConnectionError(
                self, f'Failed to establish a new connection: {e}') from e

--- a/yt_dlp/networking/_websockets.py
+++ b/yt_dlp/networking/_websockets.py
@ -5,20 +5,26 @@ import logging
 import ssl
 import sys

-from ._helper import create_connection, select_proxy, make_socks_proxy_opts, create_socks_proxy_socket
-from .common import Response, register_rh, Features
+from ._helper import (
+    create_connection,
+    create_socks_proxy_socket,
+    make_socks_proxy_opts,
+    select_proxy,
+)
+from .common import Features, Response, register_rh
 from .exceptions import (
    CertificateVerifyError,
    HTTPError,
+    ProxyError,
    RequestError,
    SSLError,
-    TransportError, ProxyError,
+    TransportError,
 )
 from .websocket import WebSocketRequestHandler, WebSocketResponse
 from ..compat import functools
 from ..dependencies import websockets
-from ..utils import int_or_none
 from ..socks import ProxyError as SocksProxyError
+from ..utils import int_or_none

 if not websockets:
    raise ImportError('websockets is not installed')
--- a/yt_dlp/networking/websocket.py
+++ b/yt_dlp/networking/websocket.py
@ -2,7 +2,7 @@ from __future__ import annotations

 import abc

-from .common import Response, RequestHandler
+from .common import RequestHandler, Response


 class WebSocketResponse(Response):
--- a/yt_dlp/socks.py
+++ b/yt_dlp/socks.py
@ -49,7 +49,7 @@ class Socks5AddressType:
    ATYP_IPV6 = 0x04


-class ProxyError(socket.error):
+class ProxyError(OSError):
    ERR_SUCCESS = 0x00

    def __init__(self, code=None, msg=None):
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@ -558,7 +558,7 @@ class LenientJSONDecoder(json.JSONDecoder):
                    s = self._close_object(e)
                    if s is not None:
                        continue
-                raise type(e)(f'{e.msg} in {s[e.pos-10:e.pos+10]!r}', s, e.pos)
+                raise type(e)(f'{e.msg} in {s[e.pos - 10:e.pos + 10]!r}', s, e.pos)
        assert False, 'Too many attempts to decode JSON'


@ -1885,6 +1885,7 @@ def setproctitle(title):
    buf = ctypes.create_string_buffer(len(title_bytes))
    buf.value = title_bytes
    try:
+        # PR_SET_NAME = 15      Ref: /usr/include/linux/prctl.h
        libc.prctl(15, buf, 0, 0, 0)
    except AttributeError:
        return  # Strange libc, just skip this
@ -2260,6 +2261,9 @@ class PagedList:
            raise self.IndexError()
        return entries[0]

+    def __bool__(self):
+        return bool(self.getslice(0, 1))
+

 class OnDemandPagedList(PagedList):
    """Download pages until a page with less than maximum results"""
@ -5070,7 +5074,7 @@ def truncate_string(s, left, right=0):
    assert left > 3 and right >= 0
    if s is None or len(s) <= left + right:
        return s
-    return f'{s[:left-3]}...{s[-right:] if right else ""}'
+    return f'{s[:left - 3]}...{s[-right:] if right else ""}'


 def orderedSet_from_options(options, alias_dict, *, use_regex=False, start=None):
--- a/yt_dlp/utils/traversal.py
+++ b/yt_dlp/utils/traversal.py
@ -23,7 +23,7 @@ def traverse_obj(

    >>> obj = [{}, {"key": "value"}]
    >>> traverse_obj(obj, (1, "key"))
-    "value"
+    'value'

    Each of the provided `paths` is tested and the first producing a valid result will be returned.
    The next path will also be tested if the path branched but no results could be found.