polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `pl.date_range` unexpectedly converts timezone-aware `datetime`s to UTC
- refactor(rust): Move `replace_time_zone` to `polars-core`
- Allow duplicate columns in sub-parts of the graph if the final result is valid
- Casting out-of-range datetime values causes panic instead of returning error
- Should select (projections) be applied before .agg(pl.all().sum()) in lazy frame?
- `list.gather` fails with list[list[int]]
- fix: Sanitize error messages to prevent terminal control character injection
- Support chunking/streaming in more cases in Expr.map_batches()
- `cum_sum` / `cum_prod` behavior with all-null columns differs from `sum`/`product` and Numpy
- `PanicException` with `scan_csv` on S3 path
- Docs
- Rust not yet supported