polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Improve string split API and DataTypes (`split`, `splitn`, `split_exact`)
- docs: Mention `make` and `cmake` for Windows
- Add `rolling_ewm` and `rolling_prod`
- chore(python): Fix mypy errors on Windows
- Support boolean iterable for argument `descending` in `DataFrame.set_sorted()`
- Backfill based on rows
- fix(python): Eager group by iterators had unclear behaviour
- predicate pushdown with `pl.Expr.cut`
- LazyFrame() not omitting hive partition columns
- In `expr.str.slice()` indicate whether an index of 0 or 1 means "start at the start of the string"
- Docs
- Rust not yet supported