narwhals 2.8.0

Narwhals v2.8.0

on Python PyPI

Changes

🚀 Performance improvements

• perf: Add __slots__ to all DTypes (#3194)
• perf: avoid full broadcast in horizontal functions (#3199)
• fix: correctly preserve arrow dtypes for pandas-like, improve concat_str performance (#3193)
• perf: Prefer Iterator > tuple > list, use native pyarrow.repeat, simplify nw.concat_str for DuckDB backend (#3190)

✨ Enhancements

• feat: Add support for {Expr,Series}.str.to_titlecase (#3116)

🐞 Bug fixes

• fix: correctly preserve arrow dtypes for pandas-like, improve concat_str performance (#3193)
• fix: BaseFrame.filter with list[bool] in predicates (#3183)

🛠️ Other improvements

• chore: Add script to automatically sort members in api-reference (#3200)
• ci: Unpin (some) dependencies (#3186)
• chore: pandas-nightly and duckdb-nightly fixes (#3158)
• [pre-commit.ci] pre-commit autoupdate (#3181)

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