#!/usr/bin/env python
# coding=utf-8
"the code is from: http://zetcode.com/lang/python/oop/"
__metaclass__ = type
class Animal:
def __init__(self, name=""):
self.name = name
def talk(self):
pass
class Cat(Animal):
def talk(self):
print "Meow!"
class Dog(Animal):
def talk(self):
print "Woof!"
a = Animal()
a.talk()
c = Cat("Missy")
c.talk()
d = Dog("Rocky")
d.talk()