polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Lazy/streaming writes to iceberg tables
- Loading arbitrary JSON fields as String doesn't preserve raw JSON, e.g. escape characters
- Issue: rolling_mean returns NaN values for specific float64 column after upgrading to Polars 1.19.0+
- Supertyping of `TimeUnit` is lossy
- polars_python::sql::PySQLContext is unsendable, but is being dropped on another thread
- docs.rs fails to build polars-lazy since 0.47.0
- New list function: `list.remove_by_index`
- Panic during Series of Array creation
- Conversion from Numpy to Polars dataframes negates all speed benefits from using Polars
- pl.map_groups with return_dtype=pl.Object causes pyo3_runtime.PanicException: object dtype not supported in Series.iter
- Docs
- Rust not yet supported