Is there a way to configure IDLE to use spaces instead of tabs for indenting?

[Alex]

I'm new to Python and have been using IDLE 3.2.3 to experiment with
code as I learn. Despite being configured to use a 4 space indentation
width, sometimes IDLE's "smart" indentation insists upon using width-8
tabs.

>From what I've been able to find on Google, this is due to a
shortcoming in Tk. While it's not that big a deal in the grand scheme
of things, I think it looks like poop, and I'd like to change IDLE to
use 4-space indentation instead of tabs for all indentation levels.

Is there any way for me to achieve what I want in IDLE, or do I have to
start up my full-blown IDE if I want consistent 4-space indentation?

Alex