property属性

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

    @property
    def name(self):
        print(‘welcome %s ‘ % self.__name)

    @name.getter
    def name(self):
        print(‘>>>>:‘,self.__name)

    @name.setter
    def name(self,val):
        if not isinstance(val,str):
            print(‘名字必须是字符串‘)
            return
        self.__name = val

    @name.deleter
    def name(self):
        print(‘deleter‘)
        print(‘不允许删除‘)




p = People(‘alex‘)
p.name
del p.name
p.name=‘zhang‘
p.name

>>>>: alex
deleter
不允许删除
>>>>: zhang