Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/canvas-gridding.py b/Demo/tkinter/matt/canvas-gridding.py
index 3c52b91..84f4ea0 100644
--- a/Demo/tkinter/matt/canvas-gridding.py
+++ b/Demo/tkinter/matt/canvas-gridding.py
@@ -7,7 +7,7 @@
 
 class Test(Frame):
     def printit(self):
-        print "hi"
+        print("hi")
 
     def createWidgets(self):
         self.QUIT = Button(self, text='QUIT',