polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Is it possible to special case `ldf.sort(pl.col("a").over("b"))` so that it works with streaming?
- `__getstate__` of sliced string Series keeps reference to original Series values.
- Polars cannot read DeltaBinaryPacked encoded files
- 0.38.3 Problems in .cargo/registry polars-plan
- Convenience method to get the week-commencing-date of an ISO week number
- dtype=pl.Object not respected when converting pandas object Series
- SOLUTION IN COMMENTS: write_parquet() using pyarrow with a "partition_cols" of type "str" maps all partition values to "...". This is NOT an issue in pyarrow.parquet.write_to_dataset
- JSON Error should also report line
- Implement a read_parquet_batched (similar to read_csv_batched) for parquet files.
- expose utility methods for creating Arrays from slices.
- Docs
- Rust not yet supported