polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Shifting Rows within Columns
- `read_parquet().to_numpy()` could be faster
- Provide Expr.to_json()
- The ```quantile``` method on ```ChunkedArray``` runs way slower when there are ```None```s inside
- Make Python-looping through nested lists faster
- `pl.DataFrame.pivot()` with Expressions
- Introspection of pl.Expr for column names
- Delta Support for filtering with delta.generationExpression partitions
- Expose row_format as an expression.
- Missing a feature message for `to_ndarray` method.
- Docs
- Rust not yet supported