Welcome!

Please read the material at http://www.python.org/dev if you haven't
already, especially the dev FAQ.  At the moment the case can't be
assigned to you in the tracker interface, but your claiming it in the
text is sufficient.

Please write the tests and create a diff-patch as outlined in the FAQ. 
Then upload it here for review.  If you need advice, #python-dev on
Freenode is a good place to get it.