polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Negative n argument for GroupBy.tail and GroupBy.head
- shift with default value on a struct does not fill all the fields
- Add the option to use Spearman's rank correlation in polars.DataFrame.corr
- Recognize `pd.Timestamp` values in `Series` constructor
- Pivot with multiple columns, null column value causes column named 'null' and can cause duplicated columns
- `write_json` isn't "pretty" even with "pretty=True"
- Add lance as a supported data format to read/write
- Add derive Partial/Eq to PolarsError
- list.get does not work with a null index if the LazyFrame has only a single row
- Confusion with the docs, incompatibility between Rust and Python names,
- Docs
- Rust not yet supported