Auto-reloading when running scripts out-of-the-box in 2024?

Hi, there is an old post asking about auto-reload in debug mode, but I am also curious about auto-reloading in general. 

I would like to run wsgiref.simple_server and auto-reload it when I make changes without installing anything additional. 

ChatGPT is even convinced that it's already possible, but I have not found how to do it. 

So is it, or what's the simplest way to do auto-reloading in 2024?