polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix(python): Fix some type hints and type aliases
- Memory regression in 1.42.0: async Parquet prefetch count raised to 512 → ~2× peak RAM on streaming scan_parquet → sink_parquet, OOMs scripts that worked on 1.41.2
- fix(rust): Avoid dedup-name collision when a generated header already exists
- fix(python): Modify list function so first argument is positional-only
- fix(rust): Don't panic in `log`/`log1p`/`exp` on non-numeric input
- Add optional wrap parameter to Expr.shift for circular shifts
- Safe FFI Export Functions Perform Unchecked Writes to Arbitrary Memory Addresses
- Unsound public FFI import function python_df_to_rust allows uninitialized memory dereference
- Non-deterministic join_where failure
- fix(rust): Solve incorrect result on `Series.is_sorted` with None values
- Docs
- Rust not yet supported