class Student(object): def __init__(self, name, score): self.name = name self.score = score def get_grade(self): if self.score>100 or self.score<0: raise ValueError('值%d错误'%self.score) if self.score >= 80: return 'A' if self.score>=60 : return 'B' return 'C'
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黑色镜框BlacKiller