You are very much right a lot of it is pretty basic knowledge. From my experience though, a lot of python developers don't take the python docs or tutorial as first resource, and quite some developers I met did lack quite some knowledge I mentioned in the article.

You are right about the fibonacci operator, I thought I did refer to another article where I mention the lru_cache as well :) But I'll double check.

Good one about the parenthesis! I'll post an update soon