Python内置的@property装饰器就是负责把一个方法变成属性调用的
用@property替代getter和setter方法
class Student(object):
@property
def score(self):
# def get_score(self):
return self._score
@score.setter
def score(self, value):
# def set_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 # 实际转化为s.set_score(60)
>>> s.score # 实际转化为s.get_score()
60
>>> s.score = 9999 # s.set_score(9999)
Traceback (most recent call last):
...
ValueError: score must between 0 ~ 100!
只给 @property 不给@xx.setter 就相当于只读属性
