【无标题】廖雪峰python基础教程笔记

廖雪峰访问限制练习题

class Student(object):
    def __init__(self, name, gender):
        self.__name = name
        self.__gender = gender

    def set_gender(self, gender):
        if gender == 'male' or gender == 'female':
            self.__gender = gender
            #raise ValueError('bad gender')
        else:
            #self.__gender = gender
            raise ValueError('bad gender')
    def get_name(self):
        return  self.__name

    def get__gender(self):
        return self.__gender

bart = Student('Bart Simpson', 'male')
bart.set_gender('female')
print(bart.get_name(), bart.get__gender())

注意：讨论区答案有错误，主要是if的多条件判断语句应写成

 if gender == 'male' or gender == 'female':

补充：关于特殊方法__init__的解释

 def __init__（self,参数）