I feel similar. No matter how good at Python I get, I doubt I'll ever write an C interface, I just don't need that. I've used pandas and some of these randomly,

I feel similar. No matter how good at Python I get, I doubt I'll ever write an C interface, I just don't need that. I've used pandas and some of these randomly, but TBH I'd rather write a dataclass with static typing rather than re-construct data in pandas. Does that bump me down to a lesser skilled programmer? I guess it's easy to pick on any rubric, but I found the implication of this one be unhelpful. I like the training materials that focus on continual development instead -- I don't recall any off the top of my head, but they provide a contextual learning path, like if you've mastered list comprehension now take a look at decorators.