So many things to fix!

Well, instead of reading Write Your Own C-extension to Speed Up Python by 100x | by Mike Huls | Towards Data Science

How to write, compile, package and import your own, superfast C-module into Python

We should have read

Write Your Own Eiffel-extension to Speed Up Python by 100x

How to write, compile, package and import your own, superfast Eiffel-module into Python

I got so many things to fix.