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# -- coding: utf-8 --

# 继承和多态的使用

# 2017/08/03

# 构造父类

class Animal(object):

def run(self):

print 'Animal is running...'

# --dog和cat便是Animal的子类，继承了Animal的所有方法--

class dog(Animal):

def run(self):

print 'Dog is running...'

class cat(Animal):

def run(self):

print 'Cat is running...'

dog = dog()

dog.run()

Cat = cat()

Cat.run()