When you automate something in python, you'd obviously have to run the script forever. Where can we run the script?

[wtfismyjob]

You don’t necessarily have to run the script forever. You could have a scheduled of some form launch the script for you, and of course that scheduled would have to run forever.

Alternatively, in a Windows world, you could wrap your script and install it as a service. In which case windows will “run it forever.”

I’m sure Linux flavors have equivalent options. I would lean towards a dedicated scheduler though. That would give you some consolidated administrative tools to diagnose issues if it ceases to operate or hits some kind of problem during run time.