polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Casting out-of-range datetime values causes panic instead of returning error
- `list.gather` fails with list[list[int]]
- fix: Sanitize error messages to prevent terminal control character injection
- Support chunking/streaming in more cases in Expr.map_batches()
- `cum_sum` / `cum_prod` behavior with all-null columns differs from `sum`/`product` and Numpy
- `strict` parameter ignored during Series construction with Struct dtypes
- Bigquery BIGNUMERIC fails to convert from arrow to polars df
- Inconsistent behaviour in `Expr.cat.get_categories` and `Series.cat.get_categories`
- Support compiling in lazy/streaming mode without cloud support
- Reproducible random number generator
- Docs
- Rust not yet supported