alt Hacker News> if my code is sync, what am I to do?
You'd use asyncio.to_thread[0].
I also don't quite get your complaint... asyncio provides a high-level concurrency primitive with coroutines, and that's a good enough primitive for workflow engines. Even with asyncio you could fork/spawn processes easily with aiomultiprocess[1], if you'd ever want or need to.
What's your use case for having more low-level concurrency primitives (threads/processes) available, having to deal with their synchronization, and running workflows sync?
[0]: https://docs.python.org/3/library/asyncio-task.html#asyncio....
> having to deal with their synchronization
No such thing is typically necessary. If modeled correctly, the need for synchronization is minimal.
With sync code, tasks run fine on different threads/interpreters/processes. Message passing via queues is used to communicate which tasks need to run. Many asyncio users seem to wholly unaware of how well it works. Go-lang doesn't even have async.
I actually like asyncio; I am just not a religious zealot about it as many here seem to be without awareness of the struggles they face with loop-hogging coroutines and multicore parallelism.