On 1/26/2011 11:02 PM Octavian Rasnita said... > As we all know, Python doesn't care too much about maintaining a > backward compatibility Where'd you get this idea? Between v2 and v3 yes, that was the intent. But otherwise, I think there's another miscommunication behind this... See http://www.python.org/dev/peps/pep-0291/ Emile