python学习 - 重写父类的方法

# coding:utf-8


class Animal:
    """动物类"""

    def __init__(self):
        pass

    def eat(self):
        print 'eat'

    def drink(self):
        print 'drink'

    def run(self):
        print 'run'

    def sleep(self):
        print 'sleep'


class Dog(Animal):
    """狗类继承动物类"""

    def bark(self):
        print '汪汪汪...'


class HaShiQi(Dog):
    """哈士奇继承狗类"""

    def tear_down_house(self):
        print '拆家'


    # 重写父类方法 bark()
    def bark(self):
        print '嘿嘿嘿...'


# 创建狗对象
er_ha = HaShiQi()

# # 调用爷爷类的方法
# er_ha.eat()
# er_ha.drink()
# er_ha.run()
# er_ha.sleep()

# 调用重写的方法
er_ha.bark()

# er_ha.tear_down_house()



# coding:u