Sorry but we actually cheated on that part. Redid the page so that the function that is now in Go is a separate little service that is called via ajax directly by the users' browsers.

So there's no actual Python-Go interaction in our code.

This was quicker, cleaner and has made the page more responsive for users.

Thanks this comment is useful, client side integration is integration after all, and I think if it was simple, you would have it done differently (if I understand your words correctly - "cheating").