Простой пример добавление атрибута через метакласс

base_function.py

# coding: utf-8

import logging


class AddLoggerMeta(type):
    def __new__(mcs, class_name, bases, attr_dict):
        attr_dict[f'_{class_name}__logger'] = logging.getLogger(class_name)
        return super().__new__(mcs, class_name, bases, attr_dict)


class Base(metaclass=AddLoggerMeta):

    def base_function(self):
        self.__logger.error('base_function')

    @classmethod
    def class_function(cls):
        cls.__logger.error('class_function')


if __name__ == '__main__':
    Base.class_function()
    b = Base()
    b.base_function()