polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `min_periods` parameter in `groupby_dynamic` and `rolling`
- Allow arithmetic between `Time` and `Duration` columns
- Add an equivalent of R/`{forcats}` `factor_lump` to regroup categorical levels
- GROUPING SETS feature in Polars
- Allow `to_dummies` on `LazyFrame`
- Document POLARS_MAX_THREADS
- Write schema description for parquet files
- Add pct to rank function
- Scanning and sinking a file without changing the file name causes a crash
- write_database is Significantly slower than .to_pandas().to_sql()
- Docs
- Rust not yet supported