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#!/usr/bin/env python3

# -*- coding: utf-8 -*-

class Student(object):

def __init__(self, name, score):

self.__name = name

self.__score = score

def get_name(self):

return self.__name

def get_score(self):

return self.__score

def set_score(self, score):

if 0 <= score <= 100:

self.__score = score

else:

raise ValueError('bad score')

def get_grade(self):

if self.__score >= 90:

return 'A'

elif self.__score >= 60:

return 'B'

else:

return 'C'

bart = Student('Bart Simpson', 59)

print('bart.get_name() =', bart.get_name())

bart.set_score(60)

print('bart.get_score() =', bart.get_score())

print('DO NOT use bart._Student__name:', bart._Student__name)