polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Seeing different behavior of pl.read_csv across different RHEL versions (8.2.1 and 8.4.1)
- Minor inconsistency between casting to col.cast(pl.Utf8) and using col.map_elements(str) for struct columns
- read_csv()'s default for rechunk ought to depend on the value of low_memory
- Memory not being released after running the melt function
- Allow multiple positional arguments for `pl.scan_csv()`
- Support ISO8601 Duration Format
- feat: Implement `round` and `truncate` for Duration columns
- Show column names in read_rows when data does not match the schema
- Allow passing pl.concat kwargs to pl.read_csv, read_parquet etc
- Add idiomatic way of adding the result of a `DataFrame.rolling` operation back to the original dataframe
- Docs
- Rust not yet supported