diff --git a/Lib/inspect.py b/Lib/inspect.py
index ffbe66f..2031755 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -1161,10 +1161,11 @@
     if obj is klass:
         # for types we check the metaclass too
         for entry in _static_getmro(type(klass)):
-            try:
-                return entry.__dict__[attr]
-            except KeyError:
-                pass
+            if _shadowed_dict(type(entry)) is _sentinel:
+                try:
+                    return entry.__dict__[attr]
+                except KeyError:
+                    pass
     if default is not _sentinel:
         return default
     raise AttributeError(attr)