Integrating a key-based mode into a compute-bound script

Hello.

I went through the tutorials and the docs but could not see a relevant example about an idea that I have in mind. So I wanted to ask whether it is possible to do this.

I already have a fairly complex python tool that when launched uses some other toolkits for training machine learning models. So my tool is a blocking process that just dumps out periodic progress logs.

Can i integrate a vi-modeish narrow HSplit to be able to send some commands to the running script to change its behaviour on the fly? To simplify imagine this program:

x = 10
while True:
  print('x = {}'.format(x))
  do_some_heavy_computations_that_block()

User presses : then sends 'x+=1', taps enter and the utility receives the command and injects to the namespace, etc.

Any pointers would be appreciated, thanks!

The issue names no repository file, test, or entry point; begin with the documented HSplit component and the input and event-loop guidance referenced by the author. A concrete issue would need to define how commands interact with the blocking process and what observable behavior or tests would confirm that the feature is complete.