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交作业

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sy107@CHINA

#1 Created at ... [Delete] [Delete and Lock User]
class Student(object):
    def __init__(self, name, gender):
        self.name = name
        self.__gender = gender
        
    def set_gender(self,gender):
        if gender in {'male','female'}:
            self.__gender = gender
        else:
            raise ValueError('wrong gender',gender)
    def get_gender(self):
        return self.__gender
        
        

# 测试:
bart = Student('Bart', 'male')
if bart.get_gender() != 'male':
    print('测试失败!')
else:
    bart.set_gender('HfgHf!')
    if bart.get_gender() != 'female':
        print('测试失败!')
    else:
        print('测试成功!')

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