Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/tkinter/matt/two-radio-groups.py b/Demo/tkinter/matt/two-radio-groups.py
index 9fd8f4f..52513ba 100644
--- a/Demo/tkinter/matt/two-radio-groups.py
+++ b/Demo/tkinter/matt/two-radio-groups.py
@@ -75,9 +75,9 @@
 
 
 def printStuff():
-    print "party is", party.get()
-    print "flavor is", flavor.get()
-    print
+    print("party is", party.get())
+    print("flavor is", flavor.get())
+    print()
 
 #################################################
 #### Main starts here ...