Python的方法解析顺序(MRO)

mro即method resolution order，主要用于在多继承时判断调的属性的路径(来自于哪个类)。

http://blog.csdn.net/imzoer/article/details/8737642

你真的理解Python中MRO算法吗？

API:

1 class type(object):
2     """
3     type(object) -> the object's type
4     type(name, bases, dict) -> a new type
5     """
6     def mro(self): # real signature unknown; restored from __doc__
7         """
8         mro() -> list
9         return a type's method resolution order
10         """
11         return []

测试代码:

1 #!/usr/bin/env python
2 class A(object):
3     def __init__(self):
4         print "enter A"
5         print("leave A")
6
7
8 class B(object):
9     def __init__(self):
10         print "enter B"
11         print "leave B"
12
13
14 class C(A,B):
15     def __init__(self):
16         print "enter C"
17         super(C, self).__init__()
18         print "leave C"
19
20 b = C()
21 mo = b.__class__.mro()
22 print mo

输出:

enter C
enter A
leave A
leave C
[<class '__main__.C'>, <class '__main__.A'>, <class '__main__.B'>, <type 'object'>]