Polars 1.35.1

1.35.1

Python Polars 1.35.1

Added 2
  • Support BYTE_ARRAY backed Decimals in Parquet
  • Add allow_empty flag to item
Changed 5
  • Don't recompute full rolling moment window when NaNs/nulls leave the window
  • Skip filtering scan IR if no paths were filtered
  • Optimize ipc stream read performance
  • Allow glimpse to return a DataFrame
  • Change group length mismatch error to ShapeError
Fixed 11
  • The SQL interface should use logical, not bitwise, behaviour for unary NOT operator
  • Fix panic if scan predicate produces 0 length mask
  • Ensure SQL table alias resolution checks against CTE aliases on fallback
  • Fix panic in group_by_dynamic with group_by and multiple chunks
  • Fix panic when using struct field as join key
  • Allow broadcast in group_by for ApplyExpr and BinaryExpr
🚀 Performance improvements
  • Don't recompute full rolling moment window when NaNs/nulls leave the window (#25078)
  • Skip filtering scan IR if no paths were filtered (#25037)
  • Optimize ipc stream read performance (#24671)
✨ Enhancements
  • Support BYTE_ARRAY backed Decimals in Parquet (#25076)
  • Allow glimpse to return a DataFrame (#24803)
  • Add allow_empty flag to item (#25048)
🐞 Bug fixes
  • The SQL interface should use logical, not bitwise, behaviour for unary "NOT" operator (#25091)
  • Fix panic if scan predicate produces 0 length mask (#25089)
  • Ensure SQL table alias resolution checks against CTE aliases on fallback (#25071)
  • Panic in group_by_dynamic with group_by and multiple chunks (#25075)
  • Minor improvement to internal is_pycapsule utility function (#25073)
  • Fix panic when using struct field as join key (#25059)
  • Allow broadcast in group_by for ApplyExpr and BinaryExpr (#25053)
  • Fix field metadata for nested categorical PyCapsule export (#25052)
  • Block predicate pushdown when group_by key values are changed (#25032)
  • Group-By aggregation problems caused by AmortSeries (#25043)
  • Don't push down predicates passed inserted cache nodes (#25042)
  • Allow for negative time in group_by_dynamic iterator (#25041)
📖 Documentation
  • Fix typo in public dataset URL (#25044)
🛠️ Other improvements
  • Disable recursive CSPE for now (#25085)
  • Change group length mismatch error to ShapeError (#25004)
  • Update toolchain (#25007)

Thank you to all our contributors for making this release possible! @Kevin-Patyk, @Liyixin95, @alexander-beedie, @coastalwhite, @kdn36, @nameexhaustion, @orlp, @r-brink, @ritchie46 and @stijnherfst

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