polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Feature parity with `info` function from `pandas`
- Select nested struct member
- Cannot pass out argument to numpy ufunc applied to polars series
- dynamic_groupby decending/backwards in time
- Expr.format(fmt) - convert column to string with custom format string
- Row-wise random sampling in LazyFrames
- `read_parquet()` returns empty `list[i64]` or explicitly crashes if `use_pyarrow=True`
- Add a `.parse_str()` method that acts like `read_csv()` on DataFrames
- rolling_list / chunks / partitions
- Extend functionality for unique/duplicated
- Docs
- Rust not yet supported