polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Streaming engine cannot be build for `pyodide`
- fix(python): Fix LazyFrame.__contains__ not issuing PerformanceWarning
- Add implicit type conversion to `read_csv` instead of raising errors directly
- test(python): Add test for list slice input
- Allow skipping invalid json in `json_decode`
- 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
- Docs
- Rust not yet supported