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Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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Polars py-0.17.15

Polars: py-0.17.15 Release

Release date:
May 23, 2023
Previous version:
py-0.17.14 (released May 16, 2023)
Magnitude:
5,309 Diff Delta
Contributors:
13 total committers
Data confidence:
Commits:
43 impacting commits

43 Commits in this Release

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

perf(rust, python, cli): use simd-json for all json parsing (#8922)
Authored May 19, 2023
feat(cli,rust,python): multiple enhancements for `SQLContext` (#8944)
Authored May 20, 2023
refactor(rust, python): simplify `take_every` (#8971)
Authored May 22, 2023
refactor(python): Clean up `repeat`/`ones`/`zeros` (#8963)
Authored May 22, 2023
feat(python): Write dataframes as delta tables (#7616)
Authored May 17, 2023
depr(rust, python): warn that, in a future version of Polars, constructing a Series with time-zone-aware datetimes will result in a dtype with UTC timezone (#8908)
Authored May 19, 2023
refactor(python): Deprecate `name` argument for `repeat` (#8977)
Authored May 22, 2023
chore(python): refactor tzinfo-related tests (#8883)
Authored May 17, 2023
test(python): Clean up tests for `repeat` (#8979)
Authored May 23, 2023
feat(cli,rust,python): add sql CASE (#8911)
Authored May 18, 2023
refactor(python): deprecate `rename` "in_place" parameter (#8960)
Authored May 23, 2023
docs(python): further enhance `SQLContext` docstrings (#8948)
Authored May 21, 2023
feat(python): Add `dtype` argument for `repeat` (#8946)
Authored May 21, 2023
fix(rust, python): window function with filtered groups (#8880)
Authored May 17, 2023
perf(rust, python): Improve explodes: `offsets_to_indexes` performance (#8964)
Authored May 22, 2023
feat(python): allow set column list input to 'drop' and 'drop_nulls' (#8962)
Authored May 22, 2023
perf(python): improve performance of `align_frames`, and add new alignment option (#8899)
Authored May 17, 2023
fix(cli,rust,python): sql qualified wildcards (#8916)
Authored May 19, 2023
perf(rust,python): avoid quadratic `exclude` behaviour when selecting against dtypes and/or wildcards (#8953)
Authored May 21, 2023
feat(python): improved inference from type annotations (#8895)
Authored May 17, 2023
depr(rust, python): warn that passing fixed-offsets to replace_time_zone, convert_time_zone, and date_range is deprecated (use zoneinfo.available_timezones() instead) (#8924)
Authored May 22, 2023
feat(cli,rust,python): add sql UNION, UNION ALL & UNION DISTINCT (#8936)
Authored May 19, 2023
feat(cli,rust,python): add sql compound identifiers (#8934)
Authored May 19, 2023
feat(python): Use schema keys to define the columns if only the schema is provided to `pl.struct` (#8952)
Authored May 20, 2023
fix(python,rust): Simplify offsets_to_indexes, fix empty offsets edge cases (#8920)
Authored May 19, 2023
feat(cli,rust,python): add sql EXPLAIN (#8897)
Authored May 18, 2023
fix(python): address edge cases with in-place modification of `Series` objects (#8915)
Authored May 19, 2023
feat(python): Pushdown `is_in` to pyarrow dataset (#8930)
Authored May 23, 2023
fix(rust, python): don't check sortedness in asof by (#8906)
Authored May 18, 2023
fix(python): don't modify `Series` with empty names in-place on `DataFrame` init (#8956)
Authored May 21, 2023
feat(cli,rust,python): add sql EXCLUDE (#8913)
Authored May 18, 2023
feat(rust, python): error on invalid sortby expr (#8986)
Authored May 23, 2023
fix(rust, python): respect rechunk in parquet (#8935)
Authored May 19, 2023
chore(ci): add codeowners (#8905)
Authored May 18, 2023
doc(python): Include an example of ranking over a group to the rank API reference (#8983)
Authored May 23, 2023
fix(rust, python): check for object type in csv writer (#8894)
Authored May 18, 2023
fix(rust, python): Fix erroneous warning in `hist` (#8982)
Authored May 23, 2023
fix(python): Add hint on PyArrow to ADBC import error (#8898)
Authored May 19, 2023
docs(python): fix docstring for `time()` (#8939)
Authored May 20, 2023
fix(python): remove bad comment/bad period (#8954)
Authored May 20, 2023

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Top Contributors in py-0.17.15

ritchie46
alexander-beedie
stinodego
universalmind303
MarcoGorelli
chitralverma
kpberry
jonashaag
mcrumiller
petar-savov

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Release Notes Published

πŸ† Highlights

  • Array (backed by arrow::FixedSizeList datatype (#8943)
  • Write dataframes as delta tables (#7616)

πŸš€ Performance improvements

  • improve list explode perf (#8974)
  • Improve explodes: offsets_to_indexes performance (#8964)
  • avoid quadratic exclude behaviour when selecting against dtypes and/or wildcards (#8953)
  • use simd-json for all json parsing (#8922)
  • improve performance of align_frames, and add new alignment option (#8899)

✨ Enhancements

  • error on invalid sortby expr (#8986)
  • Pushdown is_in to pyarrow dataset (#8930)
  • allow set column list input to 'drop' and 'drop_nulls' (#8962)
  • Array (backed by arrow::FixedSizeList datatype (#8943)
  • Add dtype argument for repeat (#8946)
  • Use schema keys to define the columns if only the schema is provided to pl.struct (#8952)
  • multiple enhancements for SQLContext (#8944)
  • add sql UNION, UNION ALL & UNION DISTINCT (#8936)
  • add sql compound identifiers (#8934)
  • add sql EXCLUDE (#8913)
  • add sql CASE (#8911)
  • add sql EXPLAIN (#8897)
  • Write dataframes as delta tables (#7616)
  • improve performance of align_frames, and add new alignment option (#8899)
  • improved inference from type annotations (#8895)

🐞 Bug fixes

  • Fix erroneous warning in hist (#8982)
  • don't modify Series with empty names in-place on DataFrame init (#8956)
  • respect rechunk in parquet (#8935)
  • Add hint on PyArrow to ADBC import error (#8898)
  • Simplify offsets_to_indexes, fix empty offsets edge cases (#8920)
  • sql qualified wildcards (#8916)
  • address edge cases with in-place modification of Series objects (#8915)
  • don't check sortedness in asof by (#8906)
  • check for object type in csv writer (#8894)
  • improve performance of align_frames, and add new alignment option (#8899)
  • window function with filtered groups (#8880)

πŸ› οΈ Other improvements

  • deprecate rename "in_place" parameter (#8960)
  • Clean up tests for repeat (#8979)
  • Deprecate name argument for repeat (#8977)
  • simplify take_every (#8971)
  • Clean up repeat/ones/zeros (#8963)
  • further enhance SQLContext docstrings (#8948)
  • docs(python) Fix typo in lazygroupby.rs error message (#8937)
  • fix docstring for time() (#8939)
  • refactor tzinfo-related tests (#8883)

Thank you to all our contributors for making this release possible! @CloseChoice, @MarcoGorelli, @alexander-beedie, @avimallu, @cbowdon, @chitralverma, @jonashaag, @kpberry, @mcrumiller, @petar-savov, @ritchie46, @stinodego and @universalmind303

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