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:

class type(object):
    """
    type(object) -> the object's type
    type(name, bases, dict) -> a new type
    """
    def mro(self): # real signature unknown; restored from __doc__
        """
        mro() -> list
        return a type's method resolution order
        """
        return []

 

测试代码:

#!/usr/bin/env python
class A(object):
    def __init__(self):
        print "enter A"
        print("leave A")


class B(object):
    def __init__(self):
        print "enter B"
        print "leave B"


class C(A,B):
    def __init__(self):
        print "enter C"
        super(C, self).__init__()
        print "leave C"

b = C()
mo = b.__class__.mro()
print mo

 

输出:

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