arlen1, is there any chance you could post a link to the AOPS Python coursebook you mentioned? It sounds like just what I've been looking for for my ds... but I couldn't find it on the AOPS website... which doesn't mean it's not out there as obvious as daylight... but... would love some help finding it! I even searched on "python" at AOPS and came up with nothing!

Thanks,

polarbear