polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Allow timedelta of more than 24 hours in group_by_dynamic every parameter
- bug: corrupted parquet output with Categorical
- Significant discrepancies in rolling moments calculation when dealing with long enough time-varying data
- Add `is_sorted` to `DataFrame`
- Writing columns containing large binary blobs will result in huge, untruncated statistics headers & compression is ~100,000x worse than `pyarrow`
- Series.__array_ufunc__ can't handle `UInt` output unless _all_ input have type `UInt`?
- Memory leak when reading CSV files in parallel using rayon
- Combine consecutive sort(maintain_order=True) into one sort.
- Tracking Issue for dealing with Unknown datatype
- cell based data types with read_excel
- Docs
- Rust not yet supported