class Dog(object):

    def __init__(self,name):

        self.name = name

    # 静态方法实际上根类没什么关系，单纯变成一个函数。

    @staticmethod

    def eat(self,food):

        print("%s is eating %s" %(self.name,food))

class Dog(object):

    n = 333

    def __init__(self,name):

        self.name = name

　　 @classmethod   #只能访问类变量

    def eat(self,food):

        print("%s is eating %s" %(self.n,food))

class Dog(object):

    n = 333

    def __init__(self,name):

        self.name = name

    @property #把一个方便变为静态属性

    def eat(self):

        print("%s is eating %s" %(self.name,"dd"))

d = Dog("ChenRonghua")

d.eat

# 创建属性方法： @property

# 修改属性方法:  @eat.setter

# 删除属性方法： @eat.deleter

class Dog(object):

    def __init__(self,name):

        self.name = name

        self.__food = None

    @property #把一个方便变为静态属性

    def eat(self):

        print("%s is eating %s" %(self.name,self.__food))

    @eat.setter #属性方法修改，添加元素

    def eat(self,food): #创建相同名称函数的方法名

        print("set to food:",food)

        self.__food = food

    @eat.deleter #属性方法删除

    def eat(self):

        del self.__food

        print("删完了")

d = Dog("ChenRonghua")  #实例化

d.eat  #不添加元素，输出

d.eat = "baozi" #赋值元素，需要两个同名函数

d.eat   #赋值后输出

#输出结果

#ChenRonghua is eating None

#set to food: baozi

#ChenRonghua is eating baozi

#删完了