Published February 6, 2026
| Version py-1.38.1
Software
Open
pola-rs/polars: Python Polars 1.38.1
Authors/Creators
- Ritchie Vink1
- Stijn de Gooijer
- Alexander Beedie
- nameexhaustion
- Gijs Burghoorn2
- Orson Peters1
- Marco Edward Gorelli3
- reswqa
- Marshall
- Jeroen van Zundert
- Gert Hulselmans4
- Koen Denecker
- Cory Grinstead
- Luke Manley
- chielP
- Itamar Turner-Trauring
- Kuba Valtar1
- Amber Sprenkels5
- Kevin Patyk6
- Lawrence Mitchell
- Karl Genockey
- eitsupi
- Henry Harbeck
- Lukas Bergdoll
- Robin
- deanm0000
- Oliver Borchert7
- Matteo Santamaria8
- Ion Koutsouris
- 1. Polars
- 2. PhD Candidate, Radboud University
- 3. Quansight
- 4. @aertslab
- 5. @pola-rs
- 6. ABN AMRO
- 7. @Quantco
- 8. University of California, Berkeley
Description
✨ Enhancements
- Add get() to retrieve a byte from binary data (#26454)
- Remove with_context in SQL lowering (#26416)
🐞 Bug fixes
- Do not overwrite used names in cluster_with_columns pushdown (#26467)
- Do not mark output of concat_str on multiple inputs as sorted (#26468)
- Fix CSV schema inference content line duplication bug (#26452)
- Fix InvalidOperationError using
scan_deltawith filter (#26448) - Alias giving missing column after streaming GroupBy CSE (#26447)
- Ensure
by_nameselector selects only names (#26437) - Restore compatibility of strings written to parquet with pyarrow filter (#26436)
- Update schema in cluster_with_columns optimization (#26430)
- Fix negative slice in groups slicing (#26442)
- Don't run CPU check on aarch64 musl (#26439)
- Fixed annotations shadowed by class methods (#26356)
- Remove the
POLARS_IDEAL_MORSEL_SIZEmonkeypatching in the parametric merge-join test (#26418) - Fix
selectormatch patterns for multiline column names (#26320)
📖 Documentation
- Add
sink_deltato API reference (#26446)
🛠️ Other improvements
- Cleanup unused attributes in optimizer (#26464)
- Use
Expr::Displayas catch all for IR - DSL asymmetry (#26471) - Ignore pytz in mypy (#26441)
- Remove the
POLARS_IDEAL_MORSEL_SIZEmonkeypatching in the parametric merge-join test (#26418) - Cleanup the parametric merge-join test (#26413)
Thank you to all our contributors for making this release possible! @Voultapher, @alexander-beedie, @azimafroozeh, @cmdlineluser, @dependabot[bot], @dsprenkels, @hamdanal, @kdn36, @nameexhaustion, @orlp, @ritchie46 and dependabot[bot]
Files
pola-rs/polars-py-1.38.1.zip
Files
(6.6 MB)
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Additional details
Related works
- Is supplement to
- Software: https://github.com/pola-rs/polars/tree/py-1.38.1 (URL)
Software
- Repository URL
- https://github.com/pola-rs/polars