gistfile1.py

class Base(object):
    def test(self, text):
        return 'base, ' + text

class One(object):
    def test(self, text):
        return 'one, ' + super(One, self).test(text)

class Two(object):
    def test(self, text):
        return 'two, ' + super(Two, self).test(text)

class Three(object):
    def test(self, text):
        return 'three, ' + super(Three, self).test(text)

class Test(One, Two, Three, Base):
    pass

Test().test('test') == 'one, two, three, base, test'