There's no reason why Facebook, with their size and engineering talent, shouldn't be able to allocate the resources to maintain their Python SDK. Making it the 20% project of a single engineer would be enough, I should think, with a few extra hours thrown in when major API changes come through. Even if they let the community drive the bulk of development, they really can't spare a few hours a week to look over bug reports and pull requests?
It's easy to write a check, but I'd like to see them take some real action and make Python a first-class citizen for Facebook app development.