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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