@idi527 Rather, ErlPort starts one python interpreter, which is one process (and which can be interacted with like any other process). You can indeed run multiple instances of these side-by-side but usually I don’t think there is a need to do this.
Can I have a python process working on an elixir thread block another python process on another thread through elixir’s messaging system?
I think this is only possible if the to-be-blocked python Port listens for messages, i.e. using cooperative scheduling. In-VM processes are managed by the scheduler(s) and are therefore scheduled preemptively. This is not the same for a Port (which is a connected Operating-System-level process, meaning that the Operating System also handles how its CPU-time scheduled).
I do wonder where this question comes from, as it seems like a weird and complex thing that might be avoided by structuring your application differently.
