full example of python multiple inheritance with MRO

py_multiple_inheritance.py

# see http://stackoverflow.com/a/3277407/422670 and in particular comment by http://stackoverflow.com/users/81636/gatoatigrado

class First(object):
    def __init__(self):
        print "first prologue"
        super(First, self).__init__()
        print "first epilogue"

class Second(First):
    def __init__(self):
        print "second prologue"
        super(Second, self).__init__()
        print "second epilogue"

class Third(First):
    def __init__(self):
        print "third prologue"
        super(Third, self).__init__()
        print "third epilogue"

class Fourth(Second, Third):
    def __init__(self):
        print "MRO: ", self.__class__.__mro__
        print "Fourth __init__"
        super(Fourth, self).__init__()
        print "that's it"

Fourth()

Expected output:

MRO:  (<class '__main__.Fourth'>, <class '__main__.Second'>, <class '__main__.Third'>, <class '__main__.First'>, <type 'object'>)
Fourth __init__
second prologue
third prologue
first prologue
first epilogue
third epilogue
second epilogue
that's it