pola-rs/polars py-0.20.30

Python Polars 0.20.30

on GitHub

⚠️ Deprecations

• Add Series/Expr.has_nulls and deprecate Series.has_validity (#16488)
• Deprecate tree_format parameter for LazyFrame.explain in favor of format (#16486)

🚀 Performance improvements

• improved numeric fill_(forward/backward) (#16475)
• only rechunk once per aggregate (#16469)

✨ Enhancements

• Minor DataFrame.__getitem__ improvements (#16495)
• Add is_column_selection() to expression meta, enhance expand_selector (#16479)
• Add Series/Expr.has_nulls and deprecate Series.has_validity (#16488)
• NDarray/Tensor support (#16466)

🐞 Bug fixes

• Fix df.chunked for struct (#16504)
• Mix of column and field expansion (#16502)
• Fix split_chunks for nested dtypes (#16493)
• Fix handling NaT values when creating Series from NumPy ndarray (#16490)
• Fix boolean trap issue in top_k/bottom_k (#16489)
• Handle struct.fields as special case of alias (#16484)
• Correct schema for list.sum (#16483)
• allow search_sorted directly on multiple chunks, and fix behavior around nulls (#16447)
• Fix use of COUNT(*) in SQL GROUP BY operations (#16465)
• respect nan_to_null when using multi-thread in pl.from_pandas (#16459)
• write_delta() apparently does support Categorical columns (#16454)

📖 Documentation

• Update the Overview section of the contributing guide (#15674)
• Use pl.field inside with_fields examples. (#16451)
• Change ordering of values in example for cum_max (#16456)

🛠️ Other improvements

• Refactor Series/DataFrame.__getitem__ logic (#16482)

Thank you to all our contributors for making this release possible!
@BGR360, @alexander-beedie, @cmdlineluser, @coastalwhite, @itamarst, @marenwestermann, @mdavis-xyz, @messense, @orlp, @ritchie46 and @stinodego