python class inheritance overided method

$ cat inheritance_overided_method.py

#!/usr/bin/python
# -*- encoding: utf-8 -*-

"""inheritance_overided_method:
parent -- func() --> func1()
  |
(inherit)
  |
child  -- func() --> Parent.func()

Then, which func1() will been called,
parent.func1() or child func1 or both?"""

class parent:
    def func(self): self.func1()
    def func1(self): print "parent.func1"

class child(parent):
    # def func(self): parent.func()
    def func(self): parent.func(self)
    def func1(self): print "child.func1"

obj = child()
obj.func()

可以看到，parent.func1() 完全没有执行！