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Published July 12, 2023 | Version py-0.18.7
Software Open

pola-rs/polars: Python Polars 0.18.7

Authors/Creators

  • 1. Quansight
  • 2. @aertslab
  • 3. University of California, Berkeley
  • 4. @coralogix
  • 5. Munin Data ApS
  • 6. @QuantCo
  • 7. The Rockefeller University
  • 8. @Quantco
  • 9. @twin-labs
  • 10. Universidad Carlos III(student)
  • 11. Jupiter Intelligence
  • 12. @apache
  • 13. Pharmatronics (a one man consultancy)

Description

🚀 Performance improvements
  • speed up python object to AnyValue construction (#9840)
  • use hash set in drop_many (#9807)
  • speed up in series 10x (#9794)
  • Faster is_sorted when no flag set (#9777)
✨ Enhancements
  • Add Run-length Encoding functions (#9826)
  • add include_key parameter to partition_by (#9750)
  • add LEFT string function for SQL (#9836)
  • add REGEXP_LIKE function for SQL (both two and three parameter version) (#9838)
  • add maintain_order argument to sort/top_k/bottom_k (#9672)
  • Dedicated horizontal aggregation functions (#9752)
  • support numpy datetime64 units (from 'ns' to 'D') in polars.from_numpy (#9783)
  • implement with_row_count as private function (#9810)
  • add support for SQL SUBSTR function (#9803)
  • add SQL support for binary data and expand recognised SQL dtype strings (#9802)
  • add new duration selector and improve selector typing (#9772)
  • reworked comfy-table layout constraints, improving table wrapping/repr (#9744)
🐞 Bug fixes
  • fix row-encode of 32 byte payloads (#9843)
  • shrink_type on all-null columns (#9811)
  • don't go into streaming engine when groupby by list (#9834)
  • fix regex + exclude (#9827)
  • add maintain_order argument to sort/top_k/bottom_k (#9672)
  • fix array concat and Series::fill_null (#9825)
  • dont preserve sortedness in offset_by for tz-aware non-constant durations (#9818)
  • Remove stray arr.eval references (#9821)
  • fix row-encode of null data (#9813)
  • allow +00:00 when loading from arrow (#9747)
  • improve/fix write_database handling of db schema and quoted table names (#9788)
  • fix row-count schema (#9797)
  • fix supertype detection (#9787)
  • fix import error when writing parquet with pyarrow (#9760)
🛠️ Other improvements
  • Refactor failing test (#9823)
  • Remove stray arr.eval references (#9821)
  • Remove old cut/qcut (#9763)
  • improve note about the behaviour when converting from ns-precision temporal values to python-native types (#9798)
  • Small updates to issue templates (#9789)
  • More cleanup around arange (#9769)
  • add missing last entry (#9782)
  • Add rows_by_key docs (#9766)

Thank you to all our contributors for making this release possible! @CloseChoice, @MarcoGorelli, @alexander-beedie, @avimallu, @jonashaag, @magarick, @mcrumiller, @ritchie46 and @stinodego

Files

pola-rs/polars-py-0.18.7.zip

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Additional details

Related works

Is supplement to
https://github.com/pola-rs/polars/tree/py-0.18.7 (URL)