class BaseJobBoard(object):
  settings_keys = []
  settings_prefix = ""

  @cached_property
  def _settings(self):
      parser_settings = dict()
      for key in self.settings_keys:
          settings_key = 'JOB_BOARD_%s_%s' % (self.settings_prefix.lower(), key.lower())
          parser_settings.update({key: config.get(settings_key)})
      return parser_settings

  def publish(self, vacancy):
      publisher = selh.publisher(vacancy, self._settings)
      publisher.public()

//в __init__ базового класса принимает настройки
class SimplePublisher(BasePublisher):

  def public():
      //доступ к настройкам через self.settings

# settings JOB_BOARD_SIMPLE_LOGIN, JOB_BOARD_SIMPLE_PASSWORD
class SimpleJobBoard(BaseJobBoard):
    settings_keys = ['login', 'password']
    settings_prefix = "simple"
    publisher = SimplePublisher