Detecting computer/program shutdown in Python?

Question

I have a Python script that runs in a loop regularly making adjustments to my lighting system. When I shut down my computer, I\'d like my script to detect that, and turn of

Answer 1

You should react to the WM_ENDSESSION message.

This message is sent when the user logs off or the computer gets shut down.

If you want to react to Sleep/Hibernate as well, you'll need to handle WM_POWERBROADCAST with PBT_APMSUSPEND.

But I don't know how to do that in python. I guess it depends on your windowing framework since you need have a windows/a message loop to receive messages.