Do any of them communicate with the BEAM? There used to be a Go based implementation of the BEAM that allowed you to drop-in with Go, I have to wonder if this could be done with Python so it doesn't interfere with what the BEAM is good that and lets Python code remain as-is.
There are several libraries that allow a Python program to communicate with an Erlang program using Erlang Term Format and such.
This approach targets more performance-sensitive cases with stuff like passing data frames around and vectors/matrices that are costly to serialize/deserialize a lot of the time.
