python 使用@property

class Student():
    @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=100
print(s.score)

比get、set方法实现起来更简单