Question

Thanks DrTacoPhD I DO NOT get the save reminder, I thought the save function was a Default?Thanks

Answer 1

Thats normal. it just means it wants to save. you have to do it every time you run and you've made changes

Answer 2

I think it's something to do with the way the python shell runs the code. It seems that it only passes the interpreter the file name of your code, which means that if you were to run it without saving, it wouldn't run your changes.

It's the same with many other interpreters and compilers.
If you want to maintain an original copy, press CTRL+ALT+S (or go file->save copy as) to save a backup.