polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Multiple Condition Mapping like `numpy.select`
- max_exprs not working with apply_multiple in 26.1
- Set bit-size of int dtype of .hash()
- Implement Series similarity functions
- Support HDF5 reading/writing (with optional dependencies)
- Difficult to control table printing width
- Python column type hints
- Support `chunk_size` argument in `write_ipc` and `sink_ipc`.
- Running queries on dataframe with a lot of columns is exponentionally slower for columns near the end of the dataframe.
- Docs
- Rust not yet supported