Update Lib/test/test_typing.py

Co-authored-by: Jelle Zijlstra <[email protected]>

Author: AlexWaygood

Lib/test/test_typing.py

@@ -7555,7 +7555,7 @@ class NormalClass:
         normal_exception = cm.exception
 
         with self.assertRaisesRegex(CustomException, "Cannot do that!") as cm:
-            class NamedTupleClass:
+            class NamedTupleClass(NamedTuple):
                 attr = Annoying()
         namedtuple_exception = cm.exception