polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- add `ignore_nulls` argument to `list.set...` functions
- Large performance regression in `iter_rows`/`to_dicts` with nested list columns vs 0.20.1
- When an error happens within `.select(col_name = pl.col(...).map_elements(function) )`, print out the `col_name` in the error message
- Add pl.Expr.struct.to_list() & pl.Expr.struct.to_array()
- Outdated example in Lazy documenation?
- Update `Display` trait for Rust `DataType` enum
- Add pl.DataFrame.to_markdown
- `root_path` in `pyarrow_options` in `DataFrame.write_parquet` should also use `pyarrow.parquet.write_to_dataset`
- Globbed LazyFrame scan can trigger AWS rate limiting
- Allow providing a specification to `pivot()` and `melt()`
- Docs
- Rust not yet supported