A few months ago I posted about using the Veros ocean model, which is written in 'pure Python'.
I have finally managed to find some time to get back to this and have produced a nice little gif (well, screen grab of one) of surface ocean circulation using the built in 4 degree global ocean example.
The animated gif isn't here because you can't put gifs larger than 10MB on the free Weebly version!
No scale, units or anything else at the moment but I'll get there eventually... ;)
I'll try and post more regularly from now on!