python Class：面向对象高级编程 @property

看不懂，先记录

一、
#!/usr/bin/env python3
# -*- coding: utf-8 -*-

class Student(object):
@property
def score(self):
return self._score
@score.setter #setter是哪里来的？？作用呢？？？
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
print s.score

运行结果：60

二、
#!/usr/bin/env python3
# -*- coding: utf-8 -*-

class Student1(object):
@property #？？？？
def birth(self):
return self._birth
@birth.setter #？？？？
def birth(self, value):
self._birth = value
@property #？？？？
def age(self):
return 2014 - self._birth

s = Student1()
s.birth = 60
print s.age

运行结果：60