cricri.py 文件源码

def _build_attributes_validator(mcs):
        """
        Returns validator to validate the sub-classes attributes.
        """

        valid_attributes = {
            Required("commands", 'required class attribute'): [
                {
                    Required("name"): str,
                    Required("cmd"): [str],
                    Optional("kill-signal", default=signal.SIGINT): int
                }
            ]
        }

        for attr_name, class_client in mcs._class_clients.items():
            client_validator = {
                Required("name"): str,
            }
            client_validator.update(class_client.validator())

            key = Optional(attr_name, 'required class attribute')
            valid_attributes[key] = [client_validator]

        return Schema(valid_attributes, extra=ALLOW_EXTRA)