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(flask框架学习笔记1)使用@property

admin 11月 11, 2020 0

以下笔记部分参考廖雪峰的博客

Python的内置装饰器@property负责把一个方法变成属性调用的

class (object):

    @property
    def score(self):
        return self._score

    @score.setter
    def score(self, value):
        if not isinstance(value, int):
            raise ValueError('score must be an integer!')
        if value < 0 or value > 100:
            raise ValueError('score must between 0 ~ 100!')
        self._score = value

>>> s = Student()
>>> s.score = 60 
>>> s.score # OK，实际转化为s.get_score()
60
>>> s.score = 9999
Traceback (most recent call last):
  ...
ValueError: score must between 0 ~ 100!