python新式类多重继承顺序问题

例子，python新式类多重继承。
 

#!/usr/bin/python  
#coding: UTF-8  
""" 
@author: CaiKnife 
"""  
  
class A(object):  
    def __init__(self):  
        super(A, self).__init__()  
        print "A!"  
  
class B(object):  
    def __init__(self):  
        super(B, self).__init__()  
        print "B!"  
  
class AB(A, B):  
    def __init__(self):  
        super(AB, self).__init__()  
        print "AB!"  
  
class C(object):  
    def __init__(self):  
        super(C,  self).__init__()  
        print "C!"  
  
class D(object):  
    def __init__(self):  
        super(D, self).__init__()  
        print "D!"  
  
class CD(C, D):  
    def __init__(self):  
        super(CD, self).__init__()  
        print "CD!"  
  
class ABCD(AB, CD):  
    def __init__(self):  
        super(ABCD, self).__init__()  
        print "ABCD!"  
  
ABCD()  

输出结果：
D!
C!
CD!
B!
A!
AB!
ABCD!

从括号右边开始继承，广度优先。