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#1 Created at ... [Delete] [Delete and Lock User]

test 4 报错后修改

def get_grade(self):
        if self.score < 0 or self.score > 100:
            raise ValueError

报错：B!=A

if self.score >= 60 and self.score < 80:
            return 'B'

综上，修改版本⬇

def get_grade(self):
        if self.score < 0 or self.score > 100:
            raise ValueError
        if self.score >= 60 and self.score < 80:
            return 'B'
        if self.score >= 80:
            return 'A'
        return 'C'

101>80，raise error如果在80判断后面，会报错，应该在前面

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