pola-rs/polars py-1.35.1

Python Polars 1.35.1

on GitHub

🚀 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