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Published August 2, 2024 | Version py-1.4.0
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pola-rs/polars: Python Polars 1.4.0

Authors/Creators

  • 1. @pola-rs
  • 2. Quansight
  • 3. @alibaba
  • 4. Polars
  • 5. @aertslab
  • 6. University of California, Berkeley
  • 7. @coralogix
  • 8. @QuantCo
  • 9. Munin Data ApS
  • 10. @Quantco
  • 11. forml.eu

Description

🚀 Performance improvements

  • Delay selection expansion (#18011)
  • Optimize strings slices (#17996)
  • Make .dt.weekday 20x faster (#17992)
  • Shrink MemSliceInner enum (#17991)
  • Push down slice with non-zero offset to Parquet (#17972)
  • Reduce copy in MemSlice (#17983)

✨ Enhancements

  • Add nested SQL join support (#18006)
  • Push down slice with non-zero offset to Parquet (#17972)
  • Add support for binary size method to Expr and Series "bin" namespace (#17924)
  • IO plugins (#17939)
  • Add SQL interface support for PostgreSQL dollar-quoted string literals (#17940)
  • Allow for parsing parquet file where the time zone is stored as lowercase "utc" (#17925)

🐞 Bug fixes

  • Add nested SQL join support (#18006)
  • Respect strict argument (#17990)
  • Multi-output column expressions in frame sort method (#17947)
  • Fix Asof join by schema (#17988)
  • Set default flags for FFI plugin (#17984)
  • Fix glob resolution for Hugging Face (#17958)
  • Several parquet reader/writer regressions (#17941)
  • Incorrect filter on categorical columns from parquet files (#17950)
  • SQL COUNT(DISTINCT x) should not include NULL values (#17930)
  • Default to None in pycapsule interface export (#17922)

📖 Documentation

  • Fix aggregation guide discrepancies (#18003)
  • Ensure last is never ambiguous with max (#17962)
  • Documentation for Arrow PyCapsule interface integration (#17935)
  • Fix Hugging Face link in user guide (#17943)

🛠️ Other improvements

  • Add unit tests for str.contains_any and str.replace_many (#17961)
  • Suggest allow_null as replacement (#17969)
  • Remove apply_generic, use unary_elementwise (#17902)
  • Add general filters in Parquet (#17910)

Thank you to all our contributors for making this release possible! @JamesCE2001, @MarcoGorelli, @alexander-beedie, @coastalwhite, @deanm0000, @deepyaman, @dependabot, @dependabot[bot], @henryharbeck, @kylebarron, @nameexhaustion, @ritchie46 and @wangxiaoying

Files

pola-rs/polars-py-1.4.0.zip

Files (4.9 MB)

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Additional details

Related works

Is supplement to
Software: https://github.com/pola-rs/polars/tree/py-1.4.0 (URL)