Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/guido/svkill.py b/Demo/tkinter/guido/svkill.py
index 95f61b8..378d58f 100755
--- a/Demo/tkinter/guido/svkill.py
+++ b/Demo/tkinter/guido/svkill.py
@@ -5,7 +5,7 @@
 from Tkinter import *
 
 if TkVersion < 4.0:
-    raise ImportError, "This version of svkill requires Tk 4.0 or later"
+    raise ImportError("This version of svkill requires Tk 4.0 or later")
 
 from string import splitfields
 from string import split