In 10 class def self print im In 13 class def self print im In 16 clas

In [10]: class A:
    def a(self):
        print 'im A'
   ....:

In [13]: class B:
    def a(self):
        print 'im B'
   ....:

In [16]: class C(A,B):
    pass
   ....:

In [18]: o=C()

In [19]: o.a()
im A

In [20]: class C(B,A):
    pass
   ....:

In [22]: o=C()

In [23]: o.a()
im B