Implementing a Python process when PC is idle?

[MikeZ]

Hello,

    I would like to execute a Python process that gets executed when my
Windows PC is in screensaver mode (so my PC can work when it is idle).

    Has anyone ever implemented this, or have an idea how this could be done
? I prefer to do this all in Python, including any Windows commands
necessary to register the process as a screensaver.

Thanks in advance,
-Mike Z.