Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/placer-simple.py b/Demo/tkinter/matt/placer-simple.py
index 30d9e9e..992a8fc 100644
--- a/Demo/tkinter/matt/placer-simple.py
+++ b/Demo/tkinter/matt/placer-simple.py
@@ -6,7 +6,7 @@
     app.button.place(x=event.x, y=event.y)
 
 def dothis():
-    print 'calling me!'
+    print('calling me!')
 
 def createWidgets(top):
     # make a frame. Note that the widget is 200 x 200