polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Consistent Lazy API engine instantiation for Python unit tests
- Getting started: write_csv("docs/assets/data/output.csv") fails outside the Polars repo
- `read_csv` on an HTTP URL raises FileNotFoundError for a file that exists; HEAD fallback failure is not surfaced
- TypeError: len() of unsized object when calling pl.from_dicts() with numpy 0-dim array
- Inconsistent handling of string arguments: literals as `pl.lit` vs. column names as `pl.col`
- fix: Return an empty Series when `diff(drop)` offset exceeds length
- feat(python): Add `connection_options` parameter to `read_database_uri`
- fix: Respect named CSV "null_values" with `new_columns` and `with_column_names`
- `list.gather` annotation does not include `str` as column name for `indeces`, although it works at runtime.
- fix(rust): Don't count unterminated comment line at EOF as CSV row
- Docs
- Rust not yet supported