1 #!/usr/bin/env python 2 3 class A: 4 def a(self): 5 return self.x 6 7 class B(A): 8 x = 123 9 10 class C(A): 11 def __init__(self, x): 12 self.x = x 13 14 b = B() 15 c = C(456) 16 17 p = b.a() 18 q = c.a() 19 20 # vim: tabstop=4 expandtab shiftwidth=4