python property说明

参考：

1. 解释为什么及何时适合用这语法：https://blog.csdn.net/AlanGuoo/article/details/78855750

2. 代码写法示例：https://blog.csdn.net/huo_1214/article/details/79242516

 # _name 是表示私有变量，关于_的使用规范，可以在本博客的另一篇文章中查看
 1 class Person(object):
    def __init__(self, name="wang"):
        self._name = name

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

    @name.setter
    def name(self, value):
        self._name = value

    @name.deleter
    def name(self):
        del self._name

if __name__ == "__main__":
    p = Person()
    print(p.name)
    p.name = "new_Wang"
    print(p.name)
    del p.name
    print(p.name)  # AttributeError: 'Person' object has no attribute '_name'