polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Performance for value_counts(sort=True) suprisingly much faster than mode()
- Add `residual` method
- Poor error message "ComputeError: Series length 2 doesn't match the DataFrame height of 4"
- make reduce/fold agg friendly AND/OR make exprs parameter take list.
- Add support for using values of the `rolling` index during calculations
- Add time-based shifting to .shift method
- Add batching (`batches` / `batched`) to DataFrame
- read_csv() do not cast the dtype automatically
- Broadcasting null comparisons are inconsistent
- Typehinting for columns
- Docs
- Rust not yet supported