For some funny reason it's line 119 on Windows.

ionelmc · ionelmc · commit cf47b286b29e · 2020-06-04T23:43:46.000+03:00
diff --git a/src/lazy_object_proxy/slots.py b/src/lazy_object_proxy/slots.py
@@ -116,7 +116,7 @@ def __name__(self, value):
     def __class__(self):
         return self.__wrapped__.__class__
 
-    @__class__.setter
+    @__class__.setter  # noqa: F811
     def __class__(self, value):  # noqa: F811
         self.__wrapped__.__class__ = value
 
