Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/guido/dialog.py b/Demo/tkinter/guido/dialog.py
index 50d84b9..426eca4 100755
--- a/Demo/tkinter/guido/dialog.py
+++ b/Demo/tkinter/guido/dialog.py
@@ -81,7 +81,7 @@
                '',
                -1,
                'OK')
-    print 'pressed button', i
+    print('pressed button', i)
     i = dialog(mainWidget,
                'File Modified',
                'File "tcl.h" has been modified since '
@@ -92,7 +92,7 @@
                'Save File',
                'Discard Changes',
                'Return To Editor')
-    print 'pressed button', i
+    print('pressed button', i)
 
 def test():
     import sys