polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Unintuitive behavior when hashing `list[cat]` columns
- Add a kwarg to write_database that governs whether to_pandas uses pyarrow extension array
- Add fixed-width char/ASCII dtype
- `pl.from_dicts` doesn't support np.ndarray
- Accept a list as input in `Expr.str.strip_suffix` and `Expr.str.strip_prefix`
- make regex opt-in instead of default for string operations (`regex=False` instead of `Literal=False`)
- Make polars.Expr.str.replace and polars.Series.str.replace default to similar behavior of built python and rust replace methods
- `jsonpath_lib_polars_vendor` is not cached by Swatinem/rust-cache@v2
- Writing partitioned Parquet files to S3 has weird memory consumption
- Slight discrepancies between pl.DataFrame() and pl.from_records() when loading (key, value) data from Python dictionaries
- Docs
- Rust not yet supported