python @property

class Person(object):
    def __init__(self, name, age):
        #属性直接对外暴露
        #self.age = age
        #限制访问
        self.__age = age
        self.__name = name
    '''
    def getAge(self):
        return self.__age
    def setAge(self, age):
        if age < 0:
            age = 0
        self.__age = age
    '''
    #方法名为受限制的变量去掉双下划綫
    @property
    def age(self):
        return self.__age
    @age.setter  #去掉下划线.setter
    def age(self, age):
        if age < 0:
            age = 0
        self.__age = age

    @property
    def name(self):
        return self.__name
    @name.setter  # 去掉下划线.setter
    def name(self, name):
        self.__name = name

per = Person("sunck", 18)

#属性直接对外暴露
#不安全，没有数据的过滤
#per.age = -10
#print(per.age)

#使用限制访问，需要自己写set和get方法才能访问
#per.setAge(15)
#print(per.getAge())

per.age = -100 #相当于调用setAage
print(per.age) #相当于调用getAge
print(per.name)

#property:可以让你对受限制访问的属性使用点语法