In official Docker documentation regarding Swarm service (https://docs.docker.com/engine/reference/commandline/service_create/) some options have different defaults, than this library.

For example when creating service through Docker CLI (docker service create), option --update-failure-action has default action pause rather than continue as defined in UpdateConfig.failure_action here:

Same thing applies for option --update-parallelism, which has default 1, but in docker-py library UpdateConfig.parallelism has default value 0 (update all at once).