练习：请把下面的Student对象的gender字段对外隐藏起来，用get_gender()和set_gender()代替，并检查参数有效性：

Discuss / Python / 练习：请把下面的Student对象的gender字段对外隐藏起来，用get_gender()和set_gender()代替，并检查参数有效性：

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

class Student(object):

def __init__(self, name, gender):

self.name = name

self.__gender = gender

def get_gender(self):

return self.__gender

def set_gender(self,gender):

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

self.__gender = gender

else:

raise ValueError('Error gender')

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

验证失败,当输入不是 male 或者 female 无法返回错误

而是输入什么就返回什么

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

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

这个if判断永远为真。