polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `scan_parquet().filter().select()` panics on a parquet file, while equivalent `select().filter()` works
- feat: Accept list of booleans for descending/nulls_last in `Expr.over()`
- fix: Apply `strict` parameter in `from_{dicts,rows}`
- .over() fails with multiple ordering columns and descending values
- fix(python)!: Single indexing on List/Array columns returns Python list instead of Series
- WrapExtension IR Node for `.ext.to(pl.dtype_of(...))`
- Enable mimalloc v3 feature for Windows Python builds
- add `expr.eval(pl.element())`
- fix(python): Support expressions in `DataFrame.unpivot`
- tracker: use faster type checker (pyrefly / ty / zuban) in CI
- Docs
- Rust not yet supported