Import the MacOS toolbox modules from the Carbon package.
diff --git a/Mac/Lib/test/ctbtest.py b/Mac/Lib/test/ctbtest.py
index cb1b506..91824d3 100644
--- a/Mac/Lib/test/ctbtest.py
+++ b/Mac/Lib/test/ctbtest.py
@@ -3,8 +3,8 @@
 # To simplify matters use the python console window for output.
 #
 import ctb
-import Evt
-import Events
+from Carbon import Evt
+from Carbon import Events
 import MacOS
 import sys