polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- why does rolling_corr output 0.0 for a zero-slope series?
- `dt.combine` is marked as accepting an `Expr`, but doesn't accept Series of equal length
- `offset_by` should accept integer expressions with a separate units argument
- Support incremental hyperloglog
- `sink_parquet` to controlled row groups
- PanicException: The column lengths in the DataFrame are not equal when collecting a LazyFrame with slice_pushdown=True
- `search_sorted` is marked explicitly as supporting np.ndarray eventhough this is implied by IntoExpr
- Remove `list_as_series=True` from `search_sorted`
- Projection pushdown not working with `pl.concat` and partial schema mismatch
- Pytest xdist bulk tests ignore POLARS_MAX_THREADS environment variable
- Docs
- Rust not yet supported