Python unpacking with **

gistfile1.py

class foo(object):
    a = 'b!'
    b = 'b!'

    def keys(self):
        return ['a', 'b']

    def __getitem__(self, item):
        return getattr(self, item)


print dict(**foo())

The minimum needed to "unpack" an object is a keys and __getitem__ method.