Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/entry-simple.py b/Demo/tkinter/matt/entry-simple.py
index 5146e6f..0bf4cab 100644
--- a/Demo/tkinter/matt/entry-simple.py
+++ b/Demo/tkinter/matt/entry-simple.py
@@ -17,7 +17,7 @@
         self.entrythingy.bind('<Key-Return>', self.print_contents)
 
     def print_contents(self, event):
-        print "hi. contents of entry is now ---->", self.entrythingy.get()
+        print("hi. contents of entry is now ---->", self.entrythingy.get())
 
 root = App()
 root.master.title("Foo")