#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
@version: v1.0
@author: shansc
@license: Apache Licence
@contact: shansc@taou.com
@time: 2018/4/14 上午10:28
"""


class Student(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


class Student1(object):
    def _get_birth(self):
        return self._birth

    def _set_birth(self, value):
        self._birth = value

    birth = property(fget=_get_birth, fset=_set_birth, doc='birth setter and getter')
    del _get_birth, _set_birth

    def _get_age(self):
        return 2014 - self._birth

    age = property(fget=_get_age, doc='age getter')
    del _get_age


student = Student()
student.birth = 10
print student.birth
# student.age = 50  # AttributeError: can't set attribute
print student.age

print '***' * 10

student1 = Student1()
student1.birth = 10
print student1.birth
student.age = 50  # AttributeError: can't set attribute
print student1.age