polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix: Raise if `n` or `fraction` cannot be cast in `sample()` for DataFrame and Expr
- high memory usage with read_csv
- More Informative `try_parse_dates` Error on Null Values
- ComputeError when using `json_decode` on a valid JSON string column
- Error with incorrect message when `sink_parquet` used with LazyFrame made from headerless csv
- Document threading model for I/O plugins
- Series.sign()
- `sum_horizontal()` should not cast values to pl.String
- Regression with map_groups (Polars 1.28)
- Optimizer: Rewrite `sort->unique` to `group-by`
- Docs
- Rust not yet supported