[ie/youtube] Fix priorization of youtube URL matching (#15596)

Authored by: Grub4K

yt_dlp/extractor/_extractors.py

@@ -1,32 +1,4 @@
 # flake8: noqa: F401
-# isort: off
-
-from .youtube import (  # Youtube is moved to the top to improve performance
-    YoutubeIE,
-    YoutubeClipIE,
-    YoutubeFavouritesIE,
-    YoutubeNotificationsIE,
-    YoutubeHistoryIE,
-    YoutubeTabIE,
-    YoutubeLivestreamEmbedIE,
-    YoutubePlaylistIE,
-    YoutubeRecommendedIE,
-    YoutubeSearchDateIE,
-    YoutubeSearchIE,
-    YoutubeSearchURLIE,
-    YoutubeMusicSearchURLIE,
-    YoutubeSubscriptionsIE,
-    YoutubeTruncatedIDIE,
-    YoutubeTruncatedURLIE,
-    YoutubeYtBeIE,
-    YoutubeYtUserIE,
-    YoutubeWatchLaterIE,
-    YoutubeShortsAudioPivotIE,
-    YoutubeConsentRedirectIE,
-)
-
-# isort: on
-
 from .abc import (
     ABCIE,
     ABCIViewIE,
@@ -2551,6 +2523,29 @@ from .youporn import (
     YouPornTagIE,
     YouPornVideosIE,
 )
+from .youtube import (
+    YoutubeClipIE,
+    YoutubeConsentRedirectIE,
+    YoutubeFavouritesIE,
+    YoutubeHistoryIE,
+    YoutubeIE,
+    YoutubeLivestreamEmbedIE,
+    YoutubeMusicSearchURLIE,
+    YoutubeNotificationsIE,
+    YoutubePlaylistIE,
+    YoutubeRecommendedIE,
+    YoutubeSearchDateIE,
+    YoutubeSearchIE,
+    YoutubeSearchURLIE,
+    YoutubeShortsAudioPivotIE,
+    YoutubeSubscriptionsIE,
+    YoutubeTabIE,
+    YoutubeTruncatedIDIE,
+    YoutubeTruncatedURLIE,
+    YoutubeWatchLaterIE,
+    YoutubeYtBeIE,
+    YoutubeYtUserIE,
+)
 from .zaiko import (
     ZaikoETicketIE,
     ZaikoIE,

yt_dlp/extractor/extractors.py

@@ -1,4 +1,4 @@
-import inspect
+import itertools
 import os
 
 from ..globals import LAZY_EXTRACTORS
@@ -17,12 +17,18 @@ else:
 if not _CLASS_LOOKUP:
     from . import _extractors
 
-    _CLASS_LOOKUP = {
+    members = tuple(
-        name: value
+        (name, getattr(_extractors, name))
-        for name, value in inspect.getmembers(_extractors)
+        for name in dir(_extractors)
-        if name.endswith('IE') and name != 'GenericIE'
+        if name.endswith('IE')
-    }
+    )
-    _CLASS_LOOKUP['GenericIE'] = _extractors.GenericIE
+    _CLASS_LOOKUP = dict(itertools.chain(
+        # Add Youtube first to improve matching performance
+        ((name, value) for name, value in members if '.youtube' in value.__module__),
+        # Add Generic last so that it is the fallback
+        ((name, value) for name, value in members if name != 'GenericIE'),
+        (('GenericIE', _extractors.GenericIE),),
+    ))
 
 # We want to append to the main lookup
 _current = _extractors_context.value