Can this be used for communication between 2 pc? about unity3d-python-communication

[offchan42]

Yes. You can use this repo. But ZeroMQ is not UDP. It is a reliable message transfer.
For your use case, gRPC and SocketIO are also acceptable.
gRPC has an official Unity package and SocketIO also has Unity package (BestHTTP).
Use any of them according to your needs. If you just want something quick, go with ZeroMQ in this repo. But there is no official ZeroMQ package, you will encounter issues I mentioned in the Known issues section. You can use ZeroMQ but avoid using multiple clients.

I think you will not need to use multiple clients because you only have one job of outputting a matrix.

[Abdul-Mukit]

Thank you. It works well, I just tried it.
One question, when you said there is no official ZeroMQ package did you mean for C#?
On their webpage, I found codes for C# and python.

[offchan42]

I mean no official package for Unity. The NetMQ dll file inside this project is a hack.