This is the source code from a Stepik course
It has been probably the most interesting coding I have ever done, so I am adding some links to similar free online content by the same author.
There are many others including more advanced courses and several on COVID-19;
Other good introductory bioinformatics exercises are:
- Phillip's book available online - the first 5 chapters are free
- This bioinformatics chapter of Phillip's programming course called Programming for Lovers
I hope you enjoy these as much as I did!