python中的问题new-style的class与classical的class的区别super()是用来干嘛的classA(object):definit(self):print"enterA"print"leaveA"classB(object):definit(self):print"enterB"

Question

python中的问题

1. new-style的class与classical的class的区别

2. super()是用来干嘛的

3. 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):

     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"

   B.__init__(self)

   C.__init__(self)

   print "leave E"

 class F(E, D):

  def __init__(self):

   print "enter F"

   E.__init__(self)

   D.__init__(self)

   print "leave F"

结果中，为什么出现两次enter D

Answer 1

这个问题的核心是多种集成（MRO）问题。首先来看他们之间的关系。    object   |       \   |    &nbs...