bpo-44222: Improve _removeHandlerRef() for a very long _handlerList

Jongy · Jongy · commit 7453857c715f · 2021-05-24T04:20:43.000+03:00
The list lookups become a big burden for very long lists.
This patch changes the "happy flow" path of 2 lookups into 1 lookup.
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
@@ -845,8 +845,9 @@ def _removeHandlerRef(wr):
     if acquire and release and handlers:
         acquire()
         try:
-            if wr in handlers:
-                handlers.remove(wr)
+            handlers.remove(wr)
+        except ValueError:
+            pass
         finally:
             release()
 
