# HG changeset patch
# User drewp@bigasterisk.com
# Date 2023-05-18 19:17:31
# Node ID 32f7064241eb6b09e05859e6c02b537e9a9ffe6b
# Parent  e69661cca1cbac201d240ce9a90f81c7f5440fdc

c2

diff --git a/light9/newtypes.py b/light9/newtypes.py
--- a/light9/newtypes.py
+++ b/light9/newtypes.py
@@ -27,7 +27,7 @@ OutputRange = NewType('OutputRange', Tup
 def _isSubclass2(t1: Type, t2: Type) -> bool:
     """same as issubclass but t1 can be a NewType"""
     if hasattr(t1, '__supertype__'):
-        t1 = t1.__superType__
+        t1 = t1.__supertype__
     return issubclass(t1, t2)