Question

class account(object):

    __duser_id = ''
    __duser_name =''
    __duser_no = ''

    def __init__(self, default, entry_name, password, user_id='', user_name='', user_no=''):
        if type(default) != bool:
            raise Exception("Error 0x1: type(default) is boolean ")
        if default == False:
            self.__user_id = user_id
            self.__user_name = user_name
            self.__user_no = user_no
        else:
            self.__user_id = __duser_id
            self.__user_name = __duser_name
            self.__user_no = __duser_no
        self.__entry_name = entry_name
        self.__password = password

    def dset(self, duser_id=__duser_id, duser_name=__duser_name, duser_no=__duser_no):
        __duser_id = duser_id
        __duser_name = duser_name
        __duser_no = duser_no
        return (__duser_id, __duser_name, __duser_no)

    def dget(self):
        return (__duser_id, __duser_name, __duser_no)

    def set(self, user_name=self.__user_name, user_id=self.__user_id, user_no=self.__user_no, password=self.__password):
        self.__user_id = user_id
        self.__user_name = user_name
        self.__user_no = user_no
        self.__password = password
        return (self.__user_id, self.__user_name, self.__user_no, self.password)

    def get(self):
        return (self.__user_id, self.__user_name, self.__user_no, self.password)

if __name__ == '__main__':
    gmail = account(default=True, entry_name='gmail', password='pass***')
    print(gmail.dget())
    print(gmail.get())

out put是：

追踪（最近一次通话）：文件＆＃34; interface.py＆＃34;，第1行，in 类帐户（对象）：文件＆＃34; interface.py＆＃34;，第30行，帐户 def set（self，user_name = self .__ user_name，user_id = self .__ user_id，user_no = self .__ user_no，password = self .__ password）： NameError：name＆＃39; self＆＃39;未定义

Answer 1

好的，明白了。但还有另外一个我改变了代码。

这是一个具有任意数量的参数和关键字的装饰器参数

def user_no_is_number(func): def wrapper(*args, **kargs): if 'user_no' in kargs: if type(kargs['user_no']) != int: raise Exception('Error 1x0: user_no must contains only numbers.') else: return func(*args, **kargs) return wrapper @staticmethod @user_no_is_number def dset(user_id=None, user_name=None, user_no=None): if user_id: account.__duser_id = user_id if user_name: account.__duser_name = user_name if user_no: account.__duser_no = user_no return (account.__duser_id, account.__duser_name, account.__duser_no)

但是dset（）函数总是返回None *我认为任意关键字参数存在问题。通过在装饰器参数中使用** kargs，它变成了字典，再次通过** kargs它只返回该字典的值。*

什么是错误？为什么？

1 个答案: