Update trio/_core/_local.py

jakkdl · A5rocks · web-flow · commit 975da8a91cfe · 2023-07-29T12:23:04.000+02:00
make `_NoValue` `Final`

Co-authored-by: EXPLOSION &lt;git@helvetica.moe&gt;
diff --git a/trio/_core/_local.py b/trio/_core/_local.py
@@ -12,7 +12,7 @@
 
 
 @final
-class _NoValue:
+class _NoValue(metaclass=Final):
     ...
 
 
