Release Python Polars 1.3.0 · pola-rs/polars

🚀 Performance improvements

Ensure metadata flags are maintained on vertical parallelization (#17804)
Ensure only nodes that are not changed are cached in collapse optimizer (#17791)
Use bitflags for OptState (#17788)
Remove async directory auto-detection (#17779)
Fix accidental quadratic horizontal concat (#17783)
Batch parquet integer decoding (#17734)
Use mmap-ed memory if possible in Parquet reader (#17725)
Use bitflags for function options (#17723)
Also set target features and tune cpu for CC (#17716)
Introduce MemReader to file buffer in Parquet reader (#17712)

Expose binary_elementwise_into_string_amortized for plugin authors, recommend apply_into_string_amortized instead of apply_to_buffer (#17903)
Expose allocator to capsule (#17817)
Decompress in CSV / NDJSON scan (#17841)
Ensure unique names in HConcat (#17884)
Support authentication with HuggingFace login (#17881)
Enable collection with gpu engine (#17550)
Support "BY NAME" qualifier for SQL "INTERSECT" and "EXCEPT" set ops (#17835)
Write data at table level in write_excel (#17757)
Support PyCapsule Interface in DataFrame & Series constructors (#17693)
Implement Arrow PyCapsule Interface for Series/DataFrame export (#17676)
Raise informative error instead of panicking when passing invalid directives to to_string for Date dtype (#17670)
Implement forward/backward fill for all types (#17861)
Implement is_in operation on decimal type (#17832)
Optimise read_excel when using "calamine" engine with the latest fastexcel (#17735)
Support hf:// in read_(csv|ipc|ndjson) functions (#17785)
Allow literals in sort (#17780)
Expose 'strict' argument to 'is_in' (#17776)
Release the GIL in collect_schema (#17761)
Cloud support for NDJSON (#17717)
Support API token for scanning hf:// (#17682)

Scanning '%' from cloud (#17890)
Raise suitable error when invalid column passed to get_column_index (#17868)
Respect glob=False for cloud reads (#17860)
Properly write nest-nulled values in Parquet (#17845)
Improve default write_excel int/float format when using a dark "table_style" (#17869)
Fix from_arrow for struct type (#17839)
Fix bool/string usage of "column_totals" parameter in write_excel (#17846)
Infer decimal scales on mixed scale input (#17840)
Don't ignore timezones in list of dicts constructor (#14211)
Raise on unsupported fill strategy dtype (#17837)
Properly write nested NullArray in Parquet (#17807)
Check input type on list.to_struct (#17834)
Fix right join schema (#17833)
Simultaneous usage of named_expr and schema in pl.struct (#17768)
Fix projection pusdhown of literals without names (#17778)
Don't expand HTTP paths (#17774)
Check funtion input len at expansion (#17763)
Don't panic in invalid agg_groups (#17762)
Raise empty struct (#17736)
Fix GC logic in write_ipc (#17752)
Panic in pl.concat_list and list.concat on empty inputs (#17742)
Fix out nullability for structs coming from arrow (#17738)
Percent encode for Hugging Face paths (#17718)

Updating the join example input for rust for consistency with python example (#17898)
Improve filter documentation (#17755)
Reword "how" param docstring entry for 'semi' and 'anti' join types for clarity (#17843)
Mention read_* functions in Hugging Face section in user guide (#17799)
Show return type for Series attributes in API reference (#17759)
Add function with multiple arguments example to Expr.map_batches (#17789)
Add Hugging Face section to user guide (#17721)