#方式一:

# class Student(object):

#     def __init__(self,name,sc):

#         self.name = name

#         self.sc = sc

#

#     @property

#     def score(self):

#         return self.sc

#

#     @score.setter

#     def score(self,value):

#         if not isinstance(value, int):

#             raise ValueError('分数必须是整数才行呐')

#         if value < 0 or value > 100:

#             raise ValueError('分数必须0-100之间')

#         self.sc = value

#

#     @score.deleter

#     def score(self):

#         del self.sc

#-----------------------------------------------------------

#方式二:

class Student(object):

    def __init__(self,name,sc):

        self.name = name

        self.sc = sc

    def get_score(self):

        return self.sc

    def set_score(self,value):

        if not isinstance(value, int):

            raise ValueError('分数必须是整数才行呐')

        if value < 0 or value > 100:

            raise ValueError('分数必须0-100之间')

        self.sc = value

    def del_score(self):

        del self.sc

    score = property(get_score,set_score,del_score)

X = Student('anec',50)

print(X.__dict__)

print(X.score)

X.score = 90

print(X.score)

del X.score

print(X.__dict__)