[nix]

"Shift" is a big omission, though you can guess at it from the emphasis on certain numeric keys. One of the great things about Python is that there are fewer chorded characters. It's also one of the worst things about Lisp on a standard keyboard.

[Zakiazigazi]

Hi, I added shift counting to Mahdi's code a while ago: (https://github.com/zaki/Keyboard-Heatmap-1), so it should be easy to generate more correct heatmaps (in multiple keyboard layouts too) if you are interested.