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#!/usr/bin/env python

# -*- encoding: utf-8 -*-

"""

Topic: class和instance的练习

Desc :

"""

class Dog:

# 可变对象最好不要定义为类变量，防止共享时修改混乱

kind = 'canine' # class variable shared by all instances

def __init__(self, name):

self.name = name # instance variable unique to each instance

def change_dog():

Dog.kind = 'another'

if __name__ == '__main__':

a = Dog('adog')

b = Dog('bdog')

print(Dog.kind, a.kind, a.name)

print(Dog.kind, b.kind, b.name)

change_dog()

print(Dog.kind, a.kind, a.name)

print(Dog.kind, b.kind, b.name)

Sunbelt Computer Software