class A(object):
def __init__(self):
super(A, self).__init__() #可以注释这一行再看看会不会调用B的init
class B(object):
def __init__(self):
print("i am in B")
super(B, self).__init__()
class C(A, B):
def __init__(self):
print("i am in C")
super(C, self).__init__()
c = C()