# 
# coding:utf-8
# 

'''
访问限制
'''

__author__ = 'JyHu'


class Student(object):
    def __init__(self, name, score):
        self.__name = name         # 前面添加 ‘__’ 相当于OC中的私有属性了，这时候在外部就无法容易的直接引用
        self.__score = score
    def print_score(self):
        print(self.__score)

    def get_name(self):
        return self.__name
    def get_score(self):
        return self.__score
    def set_name(self, name):
        self.__name = name
    def set_score(self, score):
        try:
            if 0 <= score <= 100:
                self.__score = score
            else:
                raise ValueError('Bad score')
        except ValueError, error:
            print('catch error : %s' % error)


bart = Student('Bart', 89)
bart.print_score()
# print(bart.__score)    # 非法
print(bart.get_score())
bart.set_score(90)
print(bart.get_score())
bart.set_score(-1)
print(bart.get_score())
print(bart._Student__name)  # Python的私有变量其实是编译器把它变成了类名加变量名了