diff --git a/python/builtins.py b/python/builtins.py
index be85811b..4da16aa7 100644
--- a/python/builtins.py
+++ b/python/builtins.py
@@ -234,4 +234,6 @@ def help(obj):
 
 del __f
 
+class Exception: pass
+
 from _long import long
\ No newline at end of file