Help with Iteration

[Chris McComas]

i have a python script that is computing ratings of sports teams.

what i'm trying to do is setup an iteration for the rating so that the
python program recomputes the rating if any of the value difference is
> 0.00005. it's common for sports ratings to run such iterations...

any tips, pointers on where to look on how to do this the best way?

right now i'm getting the ratings from the file, limiting my results
to 1 entry, the biggest number, if it's > 0.00005, then i want it to
compute the ratings again. if it is < 0.00005 then it just goes on to
the next step in the file.

thnx in advance.