class Student(object):
        def __init__(self, name, score):
                self.name = name
                self.score = score
        def get_grade(self):
                if self.score < 0 or self.score > 100:
                         raise ValueError('Score must be between 0 and 100')
                elif self.score >= 80:
                         return 'A'
                elif self.score >= 60:
                         return 'B'
                else:
                         return 'C'

VSCode上测试通过 这里不行