loaders.py 文件源码

def determine_latest_version(self, service_name, type_name):
        """Find the latest API version available for a service.

        :type service_name: str
        :param service_name: The name of the service.

        :type type_name: str
        :param type_name: The type of the service (service-2,
            paginators-1, waiters-2, etc).  This is needed because
            the latest API version available can depend on the service
            type.  For example, the latest API version available for
            a resource-1.json file may not be the latest API version
            available for a services-2.json file.

        :rtype: str
        :return: The latest API version.  If the service does not exist
            or does not have any available API data, then a
            ``DataNotFoundError`` exception will be raised.

        """
        return max(self.list_api_versions(service_name, type_name))