polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Slow `cum_count` with `over()`
- Filter-and-aggregate error with Object column
- incorrect description of substr string function
- Explicitly ordered Nominal and Ordinal Categorical Variables
- `read_csv`/`read_database` incorrectly converts naive datetime to UTC before applying timezone from a given schema
- Use AWS Rust SDK To Source Credentials For S3
- No exception raised when doing `Selector` + `list` in `DataFrame.drop`.
- unique on large data lack rows
- let pl.Expr.reshape optionally take a tuple or 2 scalars rather than just a tuple
- docs(python): Remove y and mo from join_asof
- Docs
- Rust not yet supported