--- withlock-0.5/withlock	2015-04-22 18:02:03.498607865 -0700
+++ withlock-0.5/withlock.new	2015-04-22 18:02:14.485760910 -0700
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Copyright 2009-2016 Peter Poeml
 #