py-1.40.1

paulpierre/markdown-crawlerpy-1.40.1Apr 22, 2026by github-actions[bot]

AI Summary

This release focuses on performance optimization and bug fixes for the Polars Python library, specifically addressing null handling, sorting behavior, and type checking issues.

Key Highlights

Skip validity mask processing in `__array_ufunc__` when no inputs have nulls for performance.
Add `maintain_order` parameter to `merge_sorted` function.
Honor `having` predicate in `GroupBy` iteration.
Ensure `list.sample()` allows `fraction` > 1 when `with_replacement=True`.
Fix typing for `DataFrame` and `Series` initialization to not require all optional dependencies.

New Features

Add `maintain_order` parameter to `merge_sorted` function.

Full Release Notes

## 🚀 Performance improvements

- Skip validity mask processing in \_\_array\_ufunc\_\_ when no inputs have nulls (#27358)

## ✨ Enhancements

- Cargo deny (#27363)
- Add `maintain_order` parameter to `merge_sorted` (#27263)

## 🐞 Bug fixes

- Honor `having` predicate in `GroupBy` iter (#27370)
- Use the physical dtype for `NumUnorderedImplodeReducer` arrow `ListArray` (#27375)
- Address bug in `reduce_balanced` for certain input length lists affecting `pl.concat` (#27352)
- Ensure `list.sample()` allows `fraction` > 1 when `with_replacement=True` (#27350)
- Ensure `append()` errors when `upcast=False` (#27346)
- Always rechunk sorts, prune sorts even in eager execution (#27356)
- Fix typing for `DataFrame.__init__` and `Series.__init__` so they don't require all optional dependencies to be installed (#27348)

## 📖 Documentation

- Split out openlineage docs into guide and configuration (#27371)
- Add explanation on the observatory sqlite db file (#27354)

## 🛠️ Other improvements

- Disable mypy type checking for `pyarrow` calls (#27377)
- Disable debug symbols in macos coverage tests (#27361)
- Cargo deny (#27363)

Thank you to all our contributors for making this release possible!
@EndPositive, @Kevin-Patyk, @MarcoGorelli, @carnarez, @dsprenkels, @gab23r, @jonathanchang31, @kdn36, @mzjp2 and @ritchie46