Python，错误："；未定义函数"，

我有两个

@classmethod

：一个是“operators”，另一个是“pretty\u print\u 2”。 在“operators”中，我需要称之为“pretty_print_2”

第一种方法如下：

    @classmethod
def operators(cls, operator_filter=None, limit_filter=0, ncores=1, exec_mode='sync'):


    ...

    response = None
    try:
        if Cube.client is None:
            raise RuntimeError('Cube.client is None')

        query = 'oph_operators_list '

        if operator_filter is not None:
            query += 'operator_filter=' + str(operator_filter) + ';'
        if limit_filter is not None:
            query += 'limit_filter=' + str(limit_filter) + ';'
        if ncores is not None:
            query += 'ncores=' + str(ncores) + ';'
        if exec_mode is not None:
            query += 'exec_mode=' + str(exec_mode) + ';'

        if Cube.client.submit(query) is None:
            raise RuntimeError()

        if  Cube.client.last_response is not None:
            response = Cube.client.deserialize_response()


    except Exception as e:
        print(get_linenumber(), "Something went wrong:", e)
        raise RuntimeError()
    else:

        cls.pretty_print_2(response)

@classmethod
def pretty_print_2(response):

第二种方法如下：

    @classmethod
def operators(cls, operator_filter=None, limit_filter=0, ncores=1, exec_mode='sync'):


    ...

    response = None
    try:
        if Cube.client is None:
            raise RuntimeError('Cube.client is None')

        query = 'oph_operators_list '

        if operator_filter is not None:
            query += 'operator_filter=' + str(operator_filter) + ';'
        if limit_filter is not None:
            query += 'limit_filter=' + str(limit_filter) + ';'
        if ncores is not None:
            query += 'ncores=' + str(ncores) + ';'
        if exec_mode is not None:
            query += 'exec_mode=' + str(exec_mode) + ';'

        if Cube.client.submit(query) is None:
            raise RuntimeError()

        if  Cube.client.last_response is not None:
            response = Cube.client.deserialize_response()


    except Exception as e:
        print(get_linenumber(), "Something went wrong:", e)
        raise RuntimeError()
    else:

        cls.pretty_print_2(response)

@classmethod
def pretty_print_2(response):

但是当我运行脚本时，我遇到了以下错误：

 cls.pretty_print_2(response)
TypeError: pretty_print_2() takes 1 positional argument but 2 were given

如有任何建议，我将不胜感激。

---

谢谢。

类方法中的第一个参数应该是cls，即类本身。所以你的方法是：

@classmethod
def pretty_print_2(response)

应该是这样的：

@classmethod
def pretty_print_2(cls, response)