polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix: Invalid selectors not being recognized
- read_csv() does not support `file:///tmp/foo.csv` fsspec URLs while scan_csv() does
- feat(python): Allow fill_null to be used with torch tensors
- feat: Add rolling_(min/max/sum), rolling_(min/max/sum)_by for `pl.Boolean`
- add a `pipeline` function that would be like pipe but take multiple funcs
- unnest: allow renaming, make applicable to lists, and allow *all
- `.list.unique` takes exceedingly long compared to `pl.col('x').list.set_union('x')`
- `dummy_null` in `Series.to_dummies`
- Filter predicates mis-parsed for pyarrow-based LazyFrames: parses backslash `\` as an escape character
- LazyFrame.with_context() broadcasting
- Docs
- Rust not yet supported