polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Expanding upon and improving existing benchmarks
- Support upserts in concat function
- Recognize integer timestamps when `dtypes=pl.Datetime` is passed to `read_csv`
- "Expanding" functionality
- More robust parsing of CSV files with mixed line endings
- "Dynamic" groupby using a second dataframe of start/end times or indexes
- Normalization based on a groupby aggregation within a rolling window
- Add symmetric_difference
- `json` inconsistencies
- Allow smarter convertion of dates from strings when there are multiple formats
- Docs
- Rust not yet supported