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Published March 31, 2023 | Version py-0.16.17
Software Open

pola-rs/polars: Python Polars 0.16.17

Authors/Creators

  • 1. @aertslab
  • 2. Quansight
  • 3. University of California, Berkeley
  • 4. @godatadriven
  • 5. Munin Data ApS
  • 6. @twin-labs
  • 7. Universidad Carlos III(student)
  • 8. @QuantCo
  • 9. Jupiter Intelligence
  • 10. @solokeys @trussed-dev @yamnord @ycrypto
  • 11. Pharmatronics (a one man consultancy)
  • 12. Aguila Engineering
  • 13. @Ponte-Energy-Partners

Description

🚀 Performance improvements
  • use streaming instead of partitioned groupby (#7907)
  • don't auto-stream groupby (#7906)
  • rechunk before aggs (#7903)
  • don't re-allocate groups in sorted to_dummies (#7897)
  • fix hashing regression (#7833)
  • rechunk dataframe before unique computation (#7814)
  • improve hash quality (#7813)
  • always take sorted fast path group_tuples (#7787)
✨ Enhancements
  • auto-infer detecting time-zone-awareness of fmt argument in strptime; deprecate tz_aware argument (#7886)
  • Add Series.pow() (#7898)
  • deal with null values in cut/qcut (#7878)
  • allow list/tuple lit values (#7879)
  • Support writing dynamic/live formula columns via write_excel (#7871)
  • support datetime/date subclasses (e.g. FreezeGun) (#7819)
  • support mode for floats and categoricals (#7827)
  • allow Series init with Unknown dtype to proceed as if dtype is None, to allow inference (#7830)
  • support sort by 'struct' type (#7822)
  • add to_repr methods to DataFrame and Series (#7802)
  • thousand separators in shape of repr DataFrame (#7775)
  • Improve automatic output dtype setting for map_dict. (#7797)
  • new utility from_repr function that reconstructs a DataFrame from its table repr (#7781)
  • deprecate default value of aggregation_function being 'first' in pivot. In a future version, it will default to None (#7784)
🐞 Bug fixes
  • fix lit agg (#7904)
  • disable ooc groupby (#7901)
  • Use check_exact for temporal types in assert_series_equal (#7896)
  • fix abs logical type (#7895)
  • fix boolean min/max output type and null handling (#7894)
  • Cast compound types to their simple string representation on export to Excel (#7887)
  • ensure _repr_html_ escapes column names in addition to data/body elements (#7877)
  • validate groupby_dynamic inputs (#7876)
  • correct for chunks in arg_where (#7873)
  • fix nested logical/physical list (#7872)
  • fix arbitrary nested logical types (#7869)
  • Relax type hints for when/then (#7857)
  • don't use fxhash in sink_sorted fast path (#7849)
  • parquet stats \& all kernel (#7846)
  • Add missing type hint for is_between (#7835)
  • fill null list (#7836)
  • fix explode list[null] (#7832)
  • fix unicode lower/uppercase (#7826)
  • raise error on invalid series concat strategy (#7823)
  • don't use naive name in partitioned agg (#7810)
  • Ensure CsvReader always respects the n_rows parameter (#7789)
🛠️ Other improvements
  • Fix read_csv docstring formatting (#7875)
  • update concat docstring for how parameter (#7834)
  • don't run hash stability test on arm64 (#7825)
  • Improve pl.when documentation (#7793)
  • add description of ddof (#7811)
  • Rename venv folder to .venv (#7790)
  • add a make requirements option to install/refresh dependencies without having to recreate the venv (#7792)
  • fixup stacklevels (#7796)
  • Drop ruff target version (#7791)

Thank you to all our contributors for making this release possible! @LdRoW, @MarcoGorelli, @Newtoniano, @advoet, @alexander-beedie, @duskmoon314, @foxcroftjn, @ghuls, @jonashaag, @ritchie46, @stinodego and @zundertj

Files

pola-rs/polars-py-0.16.17.zip

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Additional details

Related works

Is supplement to
https://github.com/pola-rs/polars/tree/py-0.16.17 (URL)