Multiple inheritance - the right way ?

[ichabod801]

This is how you run through the MRO:

class Top(object):

    def __init__(self):
        print('In class Top.')

class Left(Top):

    def __init__(self):
        print('In class Left.')
        super(Left, self).__init__()

class Right(Top):

    def __init__(self):
        print('In class Right.')
        super(Right, self).__init__()

class Bottom(Left, Right):

    def __init__(self):
        print('In class Bottom.')
        super(Bottom, self).__init__()

b = Bottom()

Output:
In class Bottom.
In class Left.
In class Right.
In class Top.

You can't do that with __class__.__bases__, because Bottom will call Left and Right, and both of them will call Top, so Top will be called twice.