polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- `read_csv` confusion error when `infer_schema_length=-1` (OverflowError: can't convert negative int to unsigned)
- Handle remote urls (GCP/Azure/AWS) when writeing IPC (for consistency with write_parquet)
- Add support for page skipping in parquet reader
- Horizontal version of cumulative product (polars.cum_prod_horizontal)
- Cryptic error message when empty list is passed to all_horizontal
- Make `stack` and `unstack` operations more accessible
- Decoding Arrow Buffers Fails When -1 is Used to Disable Compression
- Support globbing in ParquetAsyncReader
- pl.read_csv with raise_if_empty doesn't work when specifying columns
- Inconsisent usage of the schema argument in read_csv
- Docs
- Rust not yet supported