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Published April 30, 2025 | Version py-1.29.0
Software Open

pola-rs/polars: Python Polars 1.29.0

Authors/Creators

  • 1. Quansight
  • 2. Polars
  • 3. @alibaba
  • 4. @aertslab
  • 5. University of California, Berkeley
  • 6. @coralogix
  • 7. @QuantCo
  • 8. Munin Data ApS

Description

🚀 Performance improvements

  • Avoid alloc_zeroed in decompression (#22460)

✨ Enhancements

  • Highlight nodes in streaming phys plan graph (#22535)
  • Show physical stage graph (#22491)
  • Add structure for dispatching iceberg to native scans (#22405)
  • Add SQL support for checking array values with IN and NOT IN expressions (#22487)
  • Support DataFrame and Series init from torch Tensor objects (#22177)
  • Add RoundMode for Decimal and Float (#22248)
  • Inform users that IO error path file name can be expanded with POLARS_VERBOSE=1 (#22427)

🐞 Bug fixes

  • Streaming outer join coalesce bug (#22530)
  • Remove redundant print statement in assert_frame_schema_equal() (#22529)
  • Bug in .unique() followed by .slice() (#22471)
  • Fix error reading parquet with datetimes written by pandas (#22524)
  • Fix schema_overrides not taking effect in NDJSON (#22521)
  • Fold flags and verify scalar correctness in apply (#22519)
  • Invalid values were triggering panics instead of returning null in dt.to_date / dt.to_datetime (#22500)
  • Ensure numpy isinstance check is lazy (avoid forcing the dependency) (#22486)
  • Incorrectly dropped sort after unique for some queries (#22489)
  • Fix incorrect ternary agg state with mixed columns and scalars (#22496)
  • Make replace and replace_strict properly elementwise (#22465)
  • Fix index out of bounds panic on parquet prefiltering (#22458)
  • Integer underflow when checking parquet UTF-8 (#22472)
  • Add implementation for array.get with idx overflow (#22449)
  • Deprecate str. collection functions with flat strings and mark as elementwise (#22461)
  • Deprecate flat list.gather and mark as elementwise (#22456)
  • Inform users that IO error path file name can be expanded with POLARS_VERBOSE=1 (#22427)

📖 Documentation

  • Fix typo in structs page (#22504)

🛠️ Other improvements

  • Don't store name/dtype in grouper (#22525)
  • Add structure for dispatching iceberg to native scans (#22405)
  • Remove unused reduction code (#22462)
  • Pin to explicit macOS version in code coverage (#22432)

Thank you to all our contributors for making this release possible! @AH-Merii, @JakubValtar, @Julian-J-S, @Kevin-Patyk, @Liyixin95, @MarcoGorelli, @Matt711, @alexander-beedie, @brianmakesthings, @coastalwhite, @nameexhaustion, @orlp and @ritchie46

Files

pola-rs/polars-py-1.29.0.zip

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Additional details

Related works

Is supplement to
Software: https://github.com/pola-rs/polars/tree/py-1.29.0 (URL)

Software

Repository URL
https://github.com/pola-rs/polars