Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/entry-with-shared-variable.py b/Demo/tkinter/matt/entry-with-shared-variable.py
index 2b76162..c7cd259 100644
--- a/Demo/tkinter/matt/entry-with-shared-variable.py
+++ b/Demo/tkinter/matt/entry-with-shared-variable.py
@@ -39,7 +39,7 @@
         self.contents.set(str)
 
     def print_contents(self, event):
-        print "hi. contents of entry is now ---->", self.contents.get()
+        print("hi. contents of entry is now ---->", self.contents.get())
 
 root = App()
 root.master.title("Foo")