Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/00-HELLO-WORLD.py b/Demo/tkinter/matt/00-HELLO-WORLD.py
index 1c3151b..20a2050 100644
--- a/Demo/tkinter/matt/00-HELLO-WORLD.py
+++ b/Demo/tkinter/matt/00-HELLO-WORLD.py
@@ -5,7 +5,7 @@
 
 class Test(Frame):
     def printit(self):
-        print "hi"
+        print("hi")
 
     def createWidgets(self):
         self.QUIT = Button(self, text='QUIT', foreground='red',