[jeffnappi]

To an experienced Python/Web developer I would most likely recommend Django. I personally spend my days writing Python, although my Python backends are Bottle+SQLAlchemy.

Rails has a large community with Gems that can solve most of a beginners needs, and also has full-fledged solutions for business ready to go (eg. Double Entry accounting systems, monetary exchange rates/handling, oauth/users, etc)

Perhaps I'm wrong and I should take another look at Django however :)