polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Implement `std` for `Date`/`Datetime` dtypes
- Add nan_min/nan_max to (Lazy)GroupBy
- `next()` on GroupBy raises `AttributeError` object has no attribute `_current_index`
- Deprecate `dt` namespace methods `mean`, `median`, `min`, and `max`
- `scan_parquet` + `sink_parquet` with same filename PanicException and file truncation
- .list.product
- .str.extract extracts group, .str.extract_all doesn't
- Stochastic bug: "polars.exceptions.SchemaError: invalid series dtype: expected `List`, got `str`"
- Auto-cache mechanism produces sub-optimal logical plan on certain scenarios
- Integrate ephemeral database(s) with CI for read/write testing
- Docs
- Rust not yet supported