The note about creating your own data types is interesting. I used to be heavily dependent on tuples. Admittedly dicts would've saved me here but I liked the efficiency of numeric indexing. Anyway, any time I changed ordering or anything I'd have countless headaches. I started using dataclasses and never looked back. I love turning the type checker on in vscode and seeing it correctly catch future issues. Only problem is when libraries are indirectly hinted, as others have pointed out