类 (装饰器)

property

把一个方法伪装为一个属性

class Foo:

    def __init__(self,name):
        self.__name = name

    @property
    def name(self):
        return self.__name

    @name.setter                #修改属性时使用
    def name(self,newname):
        if type(newname) == str:
            self.__name = newname

    @name.deleter               #属删除性时使用
    def name(self):
        del self.__name

dog = Foo("xiaohei")

#赋值
dog.name = 11

#删除
del dog.name

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classmethod

将一个对象方法装换为一个类的方法

class Goods:

    __discount = 0.8

    def __init__(self,good,price):
        self.good = good
        self.price = price

    @classmethod
    def change_discount(cls,new_discount):
        cls.__discount = new_discount
        
        
obj = Goods("houzi",10)
obj.change_discount(2)

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staticmethod

把一个动态方法转换为一个函数

class Student:
    
    def __init__(self,name):
        self.name = name
    
    @staticmethod
    def login():
        pass
    
    
obj = Student.login()

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