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Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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Polars py-0.20.30

Polars: py-0.20.30 Release

Release date:
May 26, 2024
Previous version:
py-0.20.29 (released May 23, 2024)
Magnitude:
2,515 Diff Delta
Contributors:
11 total committers
Data confidence:
Commits:
26 impacting commits

26 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

refactor(rust): make Parquet `Statistics` into `enum` instead of `trait` (#16485)
Authored May 25, 2024
feat: NDarray/Tensor support (#16466)
Authored May 25, 2024
feat: Add `is_column_selection()` to expression meta, enhance `expand_selector` (#16479)
Authored May 26, 2024
fix(rust): properly set schemas in cluster_with_columns when reassigning to columns (#16463)
Authored May 24, 2024
docs: Update the Overview section of the contributing guide (#15674)
Authored May 26, 2024
fix: Fix use of `COUNT(*)` in SQL `GROUP BY` operations (#16465)
Authored May 24, 2024
fix: Mix of columnd and field expansion (#16502)
Authored May 26, 2024
feat(python): Add `Series/Expr.has_nulls` and deprecate `Series.has_validity` (#16488)
Authored May 26, 2024
fix(python): write_delta() apparently does support Categorical columns (#16454)
Authored May 24, 2024
docs(python): Change ordering of values in example for `cum_max` (#16456)
Authored May 23, 2024
perf: only rechunk once per aggregate (#16469)
Authored May 24, 2024
perf: improved numeric fill_(forward/backward) (#16475)
Authored May 25, 2024
feat(python): Minor `DataFrame.__getitem__` improvements (#16495)
Authored May 26, 2024
fix(python): Fix handling NaT values when creating Series from NumPy ndarray (#16490)
Authored May 26, 2024
docs(python): Use `pl.field` inside `with_fields` examples. (#16451)
Authored May 24, 2024
fix(python): respect `nan_to_null` when using multi-thread in `pl.from_pandas` (#16459)
Authored May 24, 2024
fix: Fix `split_chunks` for nested dtypes (#16493)
Authored May 26, 2024
refactor(rust): small change on CWC where we can reuse the old `pushable_set_bits` and reserve space for `input_exprs` (#16468)
Authored May 24, 2024
fix(rust): properly display other length in simple project and display more columns up to a maximum length (#16464)
Authored May 25, 2024
fix(rust): Fix panic when computing min() of Duration series. (#16455)
Authored May 24, 2024
depr(python): Deprecate `tree_format` parameter for `LazyFrame.explain` in favor of `format` (#16486)
Authored May 25, 2024
fix(python): Fix boolean trap issue in `top_k`/`bottom_k` (#16489)
Authored May 25, 2024
fix: Handle struct.fields as special case of alias (#16484)
Authored May 25, 2024
fix: Correct schema for list.sum (#16483)
Authored May 25, 2024
fix: Fix df.chunked for struct (#16504)
Authored May 26, 2024
python Polars 0.20.30 (#16506)
Authored May 26, 2024

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Top Contributors in py-0.20.30

coastalwhite
ritchie46
alexander-beedie
stinodego
marenwestermann
orlp
itamarst
mdavis-xyz
cmdlineluser
messense

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Release Notes Published

⚠️ Deprecations

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

πŸš€ 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)

πŸ“– 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)

πŸ› οΈ 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

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