python super 使用

原博客地址：

http://www.cnblogs.com/lovemo1314/archive/2011/05/03/2035005.html

 

 

class A(object):

  def __init__(self):

       print "enter A"

       super(A, self).__init__()  # new

       print "leave A"

 

class B(object):

   def __init__(self):

       print "enter B"

       super(B, self).__init__()  # new

       print "leave B"

 

class C(A):

   def __init__(self):

       print "enter C"

       super(C, self).__init__()

       print "leave C"

 

class D(A):

   def __init__(self):

       print "enter D"

       super(D, self).__init__()

       print "leave D"

class E(B, C):

   def __init__(self):

       print "enter E"

       super(E, self).__init__()  # change

       print "leave E"

 

class F(E, D):

   def __init__(self):

       print "enter F"

       super(F, self).__init__()  # change

       print "leave F"

 

 

f = F()

 

 

输出：

enter F

enter E

enter B

enter C

enter D

enter A

leave A

leave D

leave C

leave B

leave E

leave F

 

 

 

 

查看类F的继承顺序

>>> F.__mro__

(<class '__main__.F'>,

 <class '__main__.E'>,

 <class '__main__.B'>,

 <class '__main__.C'>,

 <class '__main__.D'>,

 <class '__main__.A'>,

 <type 'object'>)