Wishlist: make get_dummies() usable for train / test framework
Having get_dummies() in Pandas is really nice, but to be useful for machine learning, it would need to be usable in a train / test framework (or "fit_transform" and "transform", with the sklearn terminology). Let me know if this needs more explanations.

So, I guess this is a wishlist bug report to add that functionality to Pandas. I can even create a pull request, if people agree this would be something useful to have in Pandas (and are willing to coach a bit and do code review for what would be my first contribution to this project).
