Narwhals

Changes

✨ Enhancements

- feat: write_csv (832)
- feat: support dtype and copy in DataFrame.__array__ (826)
- feat: allow for non-string columns in `select` for pandas backend (828)

🐞 Bug fixes

- fix: improve validate columns (829)

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

Changes

✨ Enhancements

- feat: add `dt.to_string` to `DaskExpr` (796)
- feat: add `DaskExpr.total_minutes`, `total_seconds`, `total_milliseconds`, `total_microseconds`, `total_nanoseconds` (811)
- feat: dask expr `is_unique` & `is_duplicated` (803)
- feat: add `is_in` to `DaskExpr` and mark `is_duplicated` and `is_unique` as not implemented (802)

📦 Build system

- build: Add cudf and modin to deps (816)

🛠️ Other improvements

- test: Remove some `to_numpy` (820)
- build: Add cudf and modin to deps (816)
- test: Remove some `to_list()` (812)
- test: Use compare dicts in is_duplicated_test (809)
- ci: Modified drafter's labeller regex to match titles with uppercase (807)
- chore: use compare_dict in series tests (801)
- test: Improve `duration_attribute_tests` (798)
- chore: stable api `narwhalify` de-duplication (799)
- test: Add `cudf_constructor` to conftest (797)

Thank you to all our contributors for making this release possible!
DeaMariaLeon, FBruzzesi, MarcoGorelli, benrutter, lucianosrp, luke396 and thomasjpfan

Changes

- [pre-commit.ci] pre-commit autoupdate (308)

✨ Enhancements

- feat: add `diff()` method to Dask backend (793)
- feat: add dask `Expr.null_count` (792)

🐞 Bug fixes

- fix: cuDF compat (794)

📖 Documentation

- docs: add Narwhals.dependencies to API reference (791)

Thank you to all our contributors for making this release possible!
MarcoGorelli, anopsy, pre-commit-ci, pre-commit-ci[bot] and raisadz

Changes

✨ Enhancements

- feat: add narwhals.new_series (787)
- feat: Support Arrow PyCapsule Interface for export (786)
- feat: improve typing for `to_pandas` / `to_numpy` / `to_arrow` (783)
- feat: extend dataframe `drop` method (773)

🛠️ Other improvements

- chore: import overhaul (788)
- chore: rename _native_dataframe to _native_frame (785)
- chore: rename internal dtype functions (780)

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

Changes

🚀 Performance improvements

- perf: remove some lambdas from _dask backend (765)

✨ Enhancements

- feat: allow `from_dict` to not have native_namespace arg if all inputs are already narwhals Series (760)
- feat: extend dataframe `drop_nulls` method (779)
- feat: implement LazyFrame.head for Dask (plus: run tpc-h q2 query with Dask present) (768)
- feat: add `str.replace` and `str.replace_all` (750)
- feat: dask lazyframe remaining methods (778)
- feat: dask `sum_horizontal` (775)
- feat: dask namespace `lit` method (772)
- feat: `DaskSelectorNamespace` (771)
- feat: dataframe `to_arrow` method (770)
- feat: series `to_arrow` method (769)
- feat: dask expr `is_first|last_distinct` methods (764)
- feat: dask expr `__invert__`, `is_null`, `n_unique` methods (763)
- feat: dask expr `len` method (762)
- feat: `Series.pipe` and `Expr.pipe` (582)

🐞 Bug fixes

- fix: empty with_columns not working for pandas backend (757)

📖 Documentation

- docs: add Altair to "used by" section (776)
- docs: include "downloads per month" in readme (774)
- docs: run tpch q1 with more libraries (759)
- docs: use animals instead of cars in example (758)
- docs: patch `Series.cat` page (755)

🛠️ Other improvements

- chore: simplify Expr.clip (777)
- chore: tests series_only refactor (766)

Thank you to all our contributors for making this release possible!
FBruzzesi, MarcoGorelli, lucianosrp and muddi900

Changes

🚀 Performance improvements

- perf: keep `nw.len` totally lazy for dask (749)

✨ Enhancements

- feat: Added `Expr.any` and `Expr.all` to Dask (748)
- feat: arrow `__mod__` method (618)
- feat: allow tpc-h q1 to be run with Dask as backend (747)
- feat: add NotImplementedError error for index changing methods Dask (744)
- feat: Added `Expr.abs` to Dask (728)
- feat: add Dask `Expr.count` (731)
- feat: dask expr name namespace (735)
- feat: add `date` to datetime namespace (713)
- feat: dask expr dunder methods (740)

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