polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- collect_batches() creates different Categorical dictionaries in to_pandas()
- fix(python): Fix a few typos in the docstrings
- fix: Fix null values in `Array` columns being written incorrectly as `null`
- fix(python): Fix some type hints and type aliases
- feat!: Remove `no_optimizations` from `LazyFrame.map_batches`
- Preserve 0 height for `with_columns()` of `(0, 0)` shaped DataFrame/LazyFrame
- Preserve height when `drop()` removes all columns
- CSV column name deduplication not robust against name clashes
- Consider removing the pyarrow dependency for to_pandas() (numpy backed)
- Float expression resolves to Unknown dtype and panics with `cannot get ref Float64 from Float32`
- Docs
- Rust not yet supported