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Published August 14, 2025 | Version py-1.32.3
Software Open

pola-rs/polars: Python Polars 1.32.3

Authors/Creators

  • 1. Polars
  • 2. Quansight
  • 3. @aertslab
  • 4. University of California, Berkeley
  • 5. @coralogix
  • 6. @Quantco
  • 7. @QuantCo

Description

🚀 Performance improvements

  • Lower .sort(maintain_order=True).head() to streaming top_k (#24014)
  • Lower top-k to streaming engine (#23979)
  • Allow order pass through Filters and relax to row-seperable instead of elementwise (#23969)

✨ Enhancements

  • Add native streaming for peaks_{min,max} (#24039)
  • IR graph arrows, monospace font, box nodes (#24021)
  • Add DataTypeExpr.default_value (#23973)
  • Lower rle to a native streaming engine node (#23929)
  • Add support for Int128 to pyo3-polars (#23959)

🐞 Bug fixes

  • Scan of multiple sources with null datatype (#24065)
  • Categorical in nested data in row encoding (#24051)
  • Missing length update in builder for pl.Array repetition (#24055)
  • Race condition in global categories init (#24045)
  • Revert "fix: Don't encode entire CategoricalMapping when going to Arrow (#24036)" (#24044)
  • Error when using named functions (#24041)
  • Don't encode entire CategoricalMapping when going to Arrow (#24036)
  • Fix cast on arithmetic with lit (#23941)
  • Incorrect slice-slice pushdown (#24032)
  • Dedup common cache subplan in IR graph (#24028)
  • Allow join on Decimal in in-memory engine (#24026)
  • Fix datatypes for eval.list in aggregation context (#23911)
  • Allocator capsule fallback panic (#24022)
  • Accept another zlib "magic header" file signature (#24013)
  • Fix truediv dtypes so cast in list.eval is not dropped (#23936)
  • Don't reuse cached return_dtype for expanded map expressions (#24010)
  • Cache id is not a valid dot node id (#24005)
  • Align map_elements with and without return_dtype (#24007)
  • Fix column dtype lifetime for csv_write segfault on Categorical (#23986)
  • Allow serializing LazyGroupBy.map_groups (#23964)
  • Correct allocator name in PyCapsule (#23968)
  • Mismatched types for write function for windows (#23915)
  • Fix unpivot panic when index= column not found (#23958)

📖 Documentation

  • Fix a typo in "lazy/execution" user-guide page (#23983)

🛠️ Other improvements

  • Update pyo3-polars versions (#24031)
  • Remove insert_error_function (#24023)
  • Remove cache hits, clean up in-mem prefill (#24019)
  • Use .venv instead of venv in pyo3-polars examples (#24024)
  • Fix test failing mypy (#24017)
  • Remove outdated comment (#23998)
  • Add a _plr.pyi to remove mypy issues (#23970)
  • Don't define CountStar as dyn OptimizationRule (#23976)
  • Rename atol and rtol to abs_tol and rel_tol (#23961)
  • Introduce Row{Encode,Decode} as FunctionExpr (#23933)
  • Dispatch through pl.map_batches and AnonymousColumnsUdf (#23867)

Thank you to all our contributors for making this release possible! @JakubValtar, @Kevin-Patyk, @borchero, @cmdlineluser, @coastalwhite, @iishutov, @jarondl, @kdn36, @orlp, @rawhuul, @ritchie46 and @stijnherfst

Files

pola-rs/polars-py-1.32.3.zip

Files (6.1 MB)

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Additional details

Related works

Is supplement to
Software: https://github.com/pola-rs/polars/tree/py-1.32.3 (URL)

Software

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