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 faster way to check if two `pl.Enum` are equal, but in different order
- `pl.concat(..., how='vertical_relaxed')` with 2 different `pl.Enum` types fails to find supertype
- Allow negative indices for lazyframe head
- Can't load JSON file > 4GB in size
- [PyCapsule Interface] Exporting Categorical, Enum or Decimal type stream in wrong way
- Can't sort dataframe by multiple columns if any sort column is list or array
- Silent failures with deeply nested rolling operations in lazy mode
- `scan_parquet` push down hive filtering breaks on categorical columns
- sum_horizontal does not upcast small integer dtypes
- Change the date display format globally
- Docs
- Rust not yet supported