polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- "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
- Add `strategy` parameter to `fill_nan`
- Precasting of series before final dataframe is created
- Improve `DataFrame.describe` by adding information about missing values
- Options for overriding arrow schema during write_ipc
- Ability to set masked values within each group in groupby context
- Docs
- Rust not yet supported