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Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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Polars rs-0.49.1

Polars: rs-0.49.1 Release

Release date:
June 19, 2025
Previous version:
rs-0.49.0 (released June 18, 2025)
Magnitude:
853 Diff Delta
Contributors:
4 total committers
Data confidence:
Commits:
5 impacting commits

Top Contributors in rs-0.49.1

mcrumiller
Kevin-Patyk
mrkn
stijnherfst

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Release Notes Published

πŸš€ Performance improvements

  • Optimize Bitmap::make_mut (#23138)

✨ Enhancements

  • Allow expression input for length parameter in pad_start, pad_end, and zfill (#23182)

🐞 Bug fixes

  • Expose FieldsMapper (#23232)
  • Fix time zone handling in dt.iso_year and dt.is_leap_year (#23125)

πŸ“– Documentation

  • Update when_then in user guide (#23245)

πŸ› οΈ Other improvements

  • Connect Python assert_dataframe_equal() to Rust back-end (#23207)
  • Fix time zone handling in dt.iso_year and dt.is_leap_year (#23125)
  • Update Rust Polars versions (#23229)

Thank you to all our contributors for making this release possible! @Kevin-Patyk, @mcrumiller, @mrkn, @stijnherfst and @zyctree

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