Don't export generators future info
diff --git a/Lib/types.py b/Lib/types.py
index 1bb560c..c5737a4 100644
--- a/Lib/types.py
+++ b/Lib/types.py
@@ -83,4 +83,4 @@
 
 DictProxyType = type(TypeType.__dict__)
 
-del sys, _f, _C, _x                     # Not for export
+del sys, _f, _C, _x, generators                  # Not for export