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Published November 25, 2023 | Version py-0.19.16
Software Open

pola-rs/polars: Python Polars 0.19.16

Authors/Creators

  • 1. @pola-rs
  • 2. Quansight
  • 3. @aertslab
  • 4. @alibaba
  • 5. The Rockefeller University
  • 6. University of California, Berkeley
  • 7. @coralogix
  • 8. @QuantCo
  • 9. Munin Data ApS
  • 10. @Quantco
  • 11. @twin-labs
  • 12. Universidad Carlos III(student)

Description

⚠️ Deprecations

  • Rename series_equal/frame_equal to equals (#12618)
  • Rename map_dict to replace and change default behavior (#12599)

🚀 Performance improvements

  • order(s) of magnitude speedup when initialising List dtype Series from 2D numpy array (#12672)
  • improve merge_local_rhs_categorical traversal (#12660)
  • make values_size estimate correct for sliced arrays (#12658)
  • improve parquet utf8 validation (#12655)
  • parquet pre-allocate buffer in binary plain encode (#12652)
  • optimize dict binary decoding in parquet (#12648)
  • ensure we only check the values within bounds (#12633)
  • parquet; elide recursion in hot path (#12625)
  • improve cov/corr algorithm (#12590)

✨ Enhancements

  • Join operations on local categoricals (#12657)
  • Implement PySeries.from_buffer for boolean buffers (#12654)
  • Implement PySeries.from_buffer for numeric types (#12646)
  • use RLE_DICTIONARY for integers in parquet (#12647)
  • extend recent filter syntax upgrades to when/then construct (#12603)
  • implement RLE_DICT encoding for utf8/binary columns (reduced parquet file size) (#12623)
  • implement 'DeltaByteArray' decoding for parquet (#12602)

🐞 Bug fixes

  • json null inference (#12677)
  • cov/corr respect f32 type (#12676)
  • fix ternary zip_with null broadcast (#12668)
  • support negative slice on eager frame (#12644)
  • fix concurrency budget assertion (#12641)
  • fix oob in set operations (#12640)
  • panic reading parquet nested struct column (#12614)
  • Fix deprecation message for DataFrame.sum (#12619)
  • features: performant,lazy,random (#12600)

🛠️ Other improvements

  • Use range instead of np.arange in constructors (#12621)
  • update custom allocator instructions to include macOS (#12593)

Thank you to all our contributors for making this release possible! @alexander-beedie, @c-peters, @cardoso, @dmitrybugakov, @nameexhaustion, @orlp, @ritchie46 and @stinodego

Files

pola-rs/polars-py-0.19.16.zip

Files (3.8 MB)

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Additional details

Related works

Is supplement to
Software: https://github.com/pola-rs/polars/tree/py-0.19.16 (URL)