Remove __metaclass__ remains.
diff --git a/Demo/newmetaclasses/Eiffel.py b/Demo/newmetaclasses/Eiffel.py
index 337ad93..15fa58a 100644
--- a/Demo/newmetaclasses/Eiffel.py
+++ b/Demo/newmetaclasses/Eiffel.py
@@ -85,8 +85,8 @@
     make_eiffel_method = EiffelDescriptor
 
 def _test(metaclass):
-    class Eiffel:
-        __metaclass__ = metaclass
+    class Eiffel(metaclass=metaclass):
+        pass
 
     class Test(Eiffel):