Polars: py-1.33.1 Release

🚀 Performance improvements

• Use specialized decoding for all predicates for Parquet dictionary encoding (#24403)
• Allocate only for read items when reading Parquet with predicate (#24401)
• Don't aggregate groups for strict cast if original len (#24381)
• Allocate only for read items when reading Parquet with predicate (#24324)

✨ Enhancements

• Support S3 virtual-hosted–style URI (#24405)
• Remove explicit file create for local async writes (#24358)
• Add PyCapsule __arrow_c_schema__ interface to pl.Schema (#24365)
• Support Partitioning sinks in cloud (#24399)
• User-friendly error message on empty path expansion (#24337)
• Add unstable pre_execution_query parameter to read_database_uri (#23634)
• Add Polars security policy (#24314)

🐞 Bug fixes

• Correct sink_ipc overload for compression (#24398)
• Enable all integer dtypes for by parameter in join_asof (#24384)
• Fix Group-By + filter aggregation performs subsequent operations on all data instead of only filtered data (#24373)
• Wrap deprecated top-level imports in TYPE_CHECKING (#24340)
• Fix incorrect output ordering for row-separable exprs (#24354)
• Fix Series.__arrow_c_stream__ for Decimal and other logical types (#24120)
• Match output type to engine for Struct arithmetic (#23805)
• Make mmap use MAP_PRIVATE rather than MAP_SHARED (#24343)
• Fix cloud iceberg scan DATASET_PROVIDER_VTABLE error (#24338)
• Don't throw away type information for NumPy numeric values when using lit() (#24229)
• Incorrect logic in negative streaming slice (#24326)
• Ensure read_database_uri with ADBC works as expected with DuckDB URIs (#24097)
• Do not error on non-list Sequence for columns parameter in read_excel (#23967)

📖 Documentation

• Document newly added is_pure parameter for register_io_source (#24311)
• Create a module docstring for the public polars module (#24332)
• Update to Polars Cloud user guide (#24187)
• Update distributed page (#24323)
• Add a note and example about exporting unformatted Excel sheet data (#24145)
• Add detail about server-side cursor behaviour for SQLAlchemy in the "iter_batches" parameter of read_database (#24094)
• Add Polars security policy (#24314)

🛠️ Other improvements

• Bump c-api (#24412)
• Add a regression test for #7631 (#24363)
• Update cloud test InteractiveQuery to DirectQuery (#24287)
• Mark some tests as slow (#24327)
• Mark more tests as ready for cloud (#24315)
• Add hint to update PYPOLARS_VERSION on version assert test (#24313)

Thank you to all our contributors for making this release possible! @Kevin-Patyk, @VictorAtIfInsurance, @alexander-beedie, @coastalwhite, @dsprenkels, @itamarst, @kdn36, @kuril, @mcrumiller, @nameexhaustion, @nesb1, @orlp, @r-brink and @ritchie46