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 `missing_columns` parameter for CSV
- Remove `allow_missing_columns: bool` in favor of `missing_columns: Literal["insert", "raise"]`
- Cache glob/path expansions during IR resolving.
- feat(rust): Add `with_xxx` builder methods for `RankOptions`
- `scan_csv` support for different encodings
- docs(python): Separate `interpolate` operations for `DataFrame` and `Expr`
- `read_csv` does not work on S3 path while `scan_csv` does
- Naming of expressions involving `pl.lit(...) + pl.Expr`
- Drawback when checking the equality of dataframes if all column values are null, but the data type is not null
- Optionally include NaNs when writing JSON
- Docs
- Rust not yet supported