python diamond inheritance works

diamond.py

class Base(object):
    def data(self):
        return {'base': True}

class A(Base):
    def data(self):
        data = super(A, self).data()
        data.update({'a': True})
        return data

class B(Base):
    def data(self):
        data = super(B, self).data()
        data.update({'b': True})
        return data

class C(A, B):
    def data(self):
        data = super(C, self).data()
        data.update({'c': True})
        return data

print repr(C().data())

gistfile1.txt

$ python diamond.py 
{'a': True, 'c': True, 'base': True, 'b': True}
$