Release Python Polars 0.20.16 · pola-rs/polars

🚀 Performance improvements

improved dtype inference/refinement for read_database results (#15126)
raise if both closed and by are passed to rolling_* aggregations (#15108)
raise informative error for rolling_* aggs with by of invalid dtype (#15088)
add non_existent arg to replace_time_zone (#15062)
Support single nested row encodings (#15105)
make ooc sort configurable (#15084)
Make register_plugin a standalone function and include shared lib discovery (#14804)
Expose infer_schema_length parameter on read_database (#15076)
Async parquet: Decode parquet on a blocking thread pool (#15083)
let "ambiguous" take "null" value (#14961)
Raise informative error message when join would introduce duplicate column name (#15042)
Allow cast of decimal to boolean (#15015)
Add strict parameter to DataFrame constructor to allow non-strict construction (#15034)
Support Array statistics in parquet (#15031)
Support decimal groupby (#15000)
Add thread names to rayon thread pool (#15024)
Support decimal uniq (#15001)
expose timings in verbose state of OOC sort (#14979)

Support BinaryView in row decoder to prevent a panic in streaming group by (#15117)
Binview chunked gather; don't modify inlined view (#15124)
Fix chunked_id gather for binview buffers (#15123)
Don't cache HTTP object stores as they maintain URL state (#15121)
Output u32 when sum_horizontal provided with single boolean column (#15114)
Propagate error instead of panicking when calling product on an invalid type (#15093)
Raise error when casting Array to different width (#14995)
Fix file scan bugs for ipc, csv and parquet that occur with combinations of glob paths, row indices and predicates (#15065)
Incorrectly preserved sorted flag when concatenating sorted series containing nulls (#15082)
Return largest non-NaN value for max() on sorted float arrays if it exists instead of NaN (#15060)
return NaN for all-NaN min/max (#15066)
Prevent "index out of range for slice" error in parquet reader (#15021)
Respect nulls_last in streaming sort (#15061)
Fix Series construction from nested list with mixed data types (#15046)
Don't count nulls in streaming count agg (#15051)
agg_list on decimal lost scale (#15054)
Block predicate pushdown on equality that are use in join (#15055)
Enum equality based on categories (#15053)
Don't panic in string_addition_to_linear_concat (#15006)
CSV do utf8-validation after escaping fields (#15004)
Use primitive constructors to create a Series of lists when dtype is provided (#15002)
replace_time_zone with single-null-element "ambiguous" was panicking (#14971)

Update write_database code blocks in user guide (#15106)
Add missing docstring examples in the Struct namespace (#15071)
Improve API reference landing page (#14888)
improve join_asof example (#14993)
Fix inadvertent swap of new and old parameters in replace description (#15019)