I managed to do it, and I want to say a big thanks to you. It was the exchanges we had around how to calculate league positions that got me to a solution. A key stage I'd left out involved ranking after adding home and away games together. What I've got now isn't too pretty. The ranking will not work unless the formula is dragged down round by round, but it does work. So I'll revisit the solution when I've got some time and see if I can code something automated with python. That's gonna take a while because my coding aint too sophisticated

I found a few videos on youtube about creating tables for football leagues. They helped me in some ways, but didn't give me a way to calculate league positions from fixture results since I wasn't building a table..

Anyway, thanks again. Your time and effort have been very much appreciated.