[kolja005]

Do we work at the same company?

You put it much better than I could have. Do you know if polars at all solves the problem of having opaque, mutable objects everywhere? I feel like there's a good market for having a dataframe library that's easier to reason about in your editor. It could even be a wrapper around pandas that adds rich typing sort of the way FastAPI does with Pydantic for Starlette.

[cmdlineluser]

With Polars you use `df.select()` or `df.with_columns()` which return "new" DataFrames - so you don't have mutable objects everywhere.

There is an SO answer[1] by the Polars author which may have some relevance.

[1]: https://stackoverflow.com/questions/73934129/