Refactoring with codemod.py

<a href="http://pastie.org/343881" rel="nofollow">http://pastie.org/343881</a><p>If you don't have a facebook account or don't want to login.

To be widely used, it should be integrated into editors and IDEs. My experience is that programmers in general are so lazy, that most of them won't bother with refactoring tools unless it's right there for them as a keypress or a menu item.

looks like a very small subset of <a href="http://rope.sourceforge.net/" rel="nofollow">http://rope.sourceforge.net/</a>