Here is a short tweetorial on "Where do maximum likelihood numbers for phylogenetics come from?" I show the calcs for DNA, and provide some python code. I'm just using python as a calculator, but if you want, type it into a python file as we go along. PLS RT (E&OE) 1/24 So, first of all, do some python housekeeping. numpy, scipy and matplotlib are standard - they need to be installed on your machine, if you're not sure, pls ask your local python guru how to do this. The rich library is just to be fancy. 2/24