I'm still rooting for python:-)
But know very little about any of this.

Python subprocess.call, and pass an argument to MoI ???:
https://www.digitalocean.com/community/tutorials/how-to-use-subprocess-to-run-external-programs-in-python-3

also this link is trying to open notepad...:
https://stackoverflow.com/questions/204017/how-do-i-execute-a-program-from-python-os-system-fails-due-to-spaces-in-path

- Brian