http://docs.python.org/dev/py3k/library/stdtypes.html#index-559

Proposal: remove last sentence from

"class.__bases__
The tuple of base classes of a class object. If there are no base 
classes, this will be an empty tuple."


Reason: Sentence is a python 2 relic.  The only case is this---

>>> object.__bases__
()

Point being that documentation should be clear, puzzles left as a 
comprehension test.