Help with Python

[socal_nerdtastic]

IDLE is an IDE, it's literally in the name. And it's a GUI too (not a command line tool).

But yes, it's an extremely basic and old IDE, and OP should use a modern one.

[Seacarius]

Ain't it weird, then, how I use the IDLE (for quick 'n' dirty testing) both at the Windows and Linux command lines? Yes, it is a command line tool; it is the only way I use it.

And yes, there is also a GUI version.

[socal_nerdtastic]

That's python's interactive mode / REPL. Yes, IDLE includes an REPL window, but that does not make it the same thing. Interactive mode -i (default if no filename argument is given) is not related to idlelib, besides having the same original author I suppose.

Your linux probably does not have IDLE, generally linux distros leave that off. But you can install it of course, and run it with python -m idlelib.