minor refactoring

yt_dlp/YoutubeDL.py

@@ -179,6 +179,8 @@ from .version import CHANNEL, ORIGIN, RELEASE_GIT_HEAD, VARIANT, __version__
 if compat_os_name == 'nt':
     import ctypes
 
+__all__ = ['YoutubeDL']
+
 
 def _catch_unsafe_extension_error(func):
     @functools.wraps(func)

yt_dlp/extractor/common.py

@@ -22,7 +22,7 @@ import urllib.parse
 import urllib.request
 import xml.etree.ElementTree
 
-from .._globals import plugin_overrides
+from .._globals import plugin_overrides as _plugin_overrides
 from ..compat import (
     compat_etree_fromstring,
     compat_expanduser,
@@ -3941,13 +3941,13 @@ class InfoExtractor:
             while getattr(super_class, '__wrapped__', None):
                 super_class = super_class.__wrapped__
 
-            if not any(override.PLUGIN_NAME == plugin_name for override in plugin_overrides.get()[super_class]):
+            if not any(override.PLUGIN_NAME == plugin_name for override in _plugin_overrides.get()[super_class]):
                 cls.__wrapped__ = next_mro_class
                 cls.PLUGIN_NAME, cls.ie_key = plugin_name, next_mro_class.ie_key
                 cls.IE_NAME = f'{next_mro_class.IE_NAME}+{plugin_name}'
 
                 setattr(sys.modules[super_class.__module__], super_class.__name__, cls)
-                plugin_overrides.get()[super_class].append(cls)
+                _plugin_overrides.get()[super_class].append(cls)
         return super().__init_subclass__(**kwargs)