__init__.py 文件源码

def _get_service_func(self, method, params):
        """
        @raise InvalidServiceMethodError: Calls to private methods are not
            allowed.
        @raise UnknownServiceMethodError: Unknown method.
        @raise InvalidServiceMethodError: Service method must be callable.
        """
        service = None

        if isinstance(self.service, (type, types.ClassType)):
            service = self.service()
        else:
            service = self.service

        if method is not None:
            method = str(method)

            if method.startswith('_'):
                raise InvalidServiceMethodError(
                    "Calls to private methods are not allowed")

            try:
                func = getattr(service, method)
            except AttributeError:
                raise UnknownServiceMethodError(
                    "Unknown method %s" % str(method))

            if not python.callable(func):
                raise InvalidServiceMethodError(
                    "Service method %s must be callable" % str(method))

            return func

        if not python.callable(service):
            raise UnknownServiceMethodError(
                "Unknown method %s" % str(self.service))

        return service