Narwhals

Changes

🐞 Bug fixes

- fix: follow left-hand-rule in index alignment in from_dict (https://github.com/narwhals-dev/narwhals/pull/1475)

🛠️ Other improvements

- chore: polars type hinting (https://github.com/narwhals-dev/narwhals/pull/1467)

Thank you to all our contributors for making this release possible!
FBruzzesi and MarcoGorelli

Changes

✨ Enhancements

- feat: consistently return Python scalars from Series reductions for PyArrow (1471)
- feat: make `Series` generic (1412)
- feat: create dataframe from 2D numpy array and column names (1456)
- feat: diagonal concat (1455)

🐞 Bug fixes

- fix: address `lit` broadcasting and output name of right arithmetic ops (1424)

📖 Documentation

- docs: clean lazyframe docstrings (1466)
- docs: ecosystem and resources (1468)
- docs: add `from/to_native` in documentation examples (1461)

🛠️ Other improvements

- ci: Remove vegafusion from blocking releases, assert current branch in bump_version (1470)
- chore: PyArrow type hinting (1465)
- ci: add hierarchicalforecast (1460)

Thank you to all our contributors for making this release possible!
AlessandroMiola, EdAbati, FBruzzesi, MarcoGorelli and raisadz

Changes

- BUG: remove cudf from import hooks (1445)

✨ Enhancements

- feat: allow for "import narwhals.stable.v1.selectors as cs" (1459)
- feat: raise `NotImplementedError` for not supported parameters in `ewm_mean` for cuDF (1449)
- feat: silently support Fireducks and cudf.pandas (1439)
- feat: improve `concat` error message and `concat` docs (1435)

🐞 Bug fixes

- fix: Preseve dtypes modules in from dict (1458)

📖 Documentation

- docs: fixup typing in docstrings (1452)
- docs: fixup copy button (1440)
- docs: Add docstrings with examples to types (1438)

🛠️ Other improvements

- ci: Check docstrings don't have unused imports in docstring examples (1453)
- ci: get cudf tests passing again (1446)
- chore: add `backend_version` parameter to polars dtype translation utility (1441)

Thank you to all our contributors for making this release possible!
AlessandroMiola, MarcoGorelli and raisadz

Changes

✨ Enhancements

- feat: improve error message when casting to invalid type (1429)
- feat: add support for `Series|Expr.skew` method (1173)
- feat: make sure `from narwhals.stable.v1.dependencies` import works (1430)
- feat: support `constraints` in `DataFrame.filter` (1417)
- feat: add `Expr|Series.rolling_mean` method (1290)

🐞 Bug fixes

- fix: return Python bool instead of pyarrow boolean scalar for Series reductions (1432)
- fix: correct minimum Polars version for ewm_mean (1415)

📖 Documentation

- docs: use type hints + from_native/to_native in dataframe.py (1425)
- docs: explain optional boolean args in from_native (1421)
- docs: Add documentation for LazyGroupBy (1423)
- docs: add Plotly to the list of projects using Narwhals in README.md (1418)
- docs: use type hints + from_native/to_native in dataframe.py (1411)
- docs: use type hints + from_native/to_native in series.py (1408)
- docs: add vegafusion to "used by" on readme (1409)
- docs: use from_native / to_native in series.py (1406)
- docs: use boolean columns in any/all horizontal docstrings (1403)
- docs: use from_native / to_native in expr.py (1404)

🛠️ Other improvements

- ci: temporarily pin olama (1422)
- fix: correct minimum Polars version for ewm_mean (1415)

Thank you to all our contributors for making this release possible!
CarloLepelaars, DeaMariaLeon, FBruzzesi, MarcoGorelli, gvwilson, marenwestermann and raisadz

Changes

✨ Enhancements

- feat: Adding ewm_mean (1298)
- feat: add Series|Expr.rolling_sum method (1395)

🐞 Bug fixes

- fix: remove rogue "t" in ColumnNotFoundError (1398)

🛠️ Other improvements

- ci: add plotly to downstream tests (1376)
- ci: prevent ibis from setting upper bounds (where possible) (1399)

Thank you to all our contributors for making this release possible! FBruzzesi, DeaMariaLeon, and MarcoGorelli

Changes

✨ Enhancements

- feat: add `Series|Expr.is_finite` method (1341)
- feat: make exceptions module public (1391)
- feat: consistently raise `ColumnNotFoundError` for missing columns in `select` and `drop` (1389)
- feat: add `Series|Expr.cum_prod` method, add `reverse` kw in `cum_sum` method (1386)
- feat: add `Series|Expr` `cum_min` and `cum_max` methods (1384)
- feat: Improve error message when comparing Series with list literal, or when using multi-output expressions in unsupported context (1382)
- feat: add `Series|Expr.cum_count` method (1380)

📖 Documentation

- docs: add missing description for left join strategy (1396)
- docs: pandas boolean content tabs (1394)
- docs: Add page about pandas booleans (1392)
- docs: Show ExprT as return type for Expr namespaces (1388)
- docs: Start using Darglint (1387)
- docs : docstrings examples - dtypes (1121)
- docs: Document more return types (1381)
- docs: Avoid copying >>> and ... from clipboard (1375)

🛠️ Other improvements

- chore: update `InvalidIntoExprError` to mention `nw.lit` (1393)
- chore: Consistent invalid `IntoExpr` error (1379)
- feat: consistently raise `ColumnNotFoundError` for missing columns in `select` and `drop` (1389)
- chore: suggest to add issue number in pr template (1378)
- chore: More Polars typing, update 'used by', link to roadmap (1377)
- chore: cleanup tpch execute (1374)

Thank you to all our contributors for making this release possible!
DeaMariaLeon, EdAbati, FBruzzesi, LiamConnors, MarcoGorelli, anopsy and raisadz