python_102_属性方法

# 属性方法：把一个方法变成一个静态属性
#1
class Dog(object):
    def __init__(self,name):
        self.name=name
    @property#属性
    def eat(self):#不能传参数（见调用时为d1.eat，不用加括号）
        print('%s is eating %s'%(self.name,'肉'))
    def talk(self):
        print('吃饱了')
d1=Dog('白蹄')
d1.eat#不用加括号，加括号就错
d1.talk()
#2
class Dog(object):
    def __init__(self,name):
        self.name=name
    @property
    def eat(self):
        print('%s is eating %s'%(self.name,'肉'))
    @property
    def talk(self,):
        print('吃饱了')
    @talk.setter
    def talk(self,food):
        print('set to food',food)
d1=Dog('白蹄')
d1.eat
d1.talk
d1.talk='包子'
#3
class Dog(object):
    def __init__(self,name):
        self.name=name
        self.__food=None#私有属性
    @property
    def eat(self):
        print('%s is eating %s'%(self.name,'肉'))
    @property
    def talk(self,):
        print('%s吃%s嘛？'%(self.name,self.__food))
    @talk.setter
    def talk(self,food):
        print('set to food',food)
        self.__food=food
d1=Dog('白蹄')
d1.eat
d1.talk
d1.talk='包子'
d1.talk
# del d1.talk出错，属性方法此种方式删不掉

#4
class Dog(object):
    def __init__(self,name):
        self.name=name
        self.__food=None
    @property
    def eat(self):
        print('%s is eating %s'%(self.name,'肉'))
    @property
    def talk(self,):
        print('%s吃%s嘛？'%(self.name,self.__food))
    @talk.setter
    def talk(self,food):
        print('set to food',food)
        self.__food=food
    @talk.deleter
    def talk(self):
        del self.__food#删掉私有属性
        print('删完了')
d1=Dog('白蹄')
d1.eat
d1.talk
d1.talk='包子'
d1.talk
del d1.talk
# d1.talk出错，已经删除不能运行

#http://www.cnblogs.com/alex3714/articles/5213184.html