pola-rs/polars py-0.18.7 on GitHub

🚀 Performance improvements

Add Run-length Encoding functions (#9826)
add include_key parameter to partition_by (#9750)
add LEFT string function for SQL (#9836)
add REGEXP_LIKE function for SQL (both two and three parameter version) (#9838)
add maintain_order argument to sort/top_k/bottom_k (#9672)
Dedicated horizontal aggregation functions (#9752)
support numpy datetime64 units (from 'ns' to 'D') in polars.from_numpy (#9783)
implement with_row_count as private function (#9810)
add support for SQL SUBSTR function (#9803)
add SQL support for binary data and expand recognised SQL dtype strings (#9802)
add new duration selector and improve selector typing (#9772)
reworked comfy-table layout constraints, improving table wrapping/repr (#9744)

fix row-encode of 32 byte payloads (#9843)
shrink_type on all-null columns (#9811)
don't go into streaming engine when groupby by list (#9834)
fix regex + exclude (#9827)
add maintain_order argument to sort/top_k/bottom_k (#9672)
fix array concat and Series::fill_null (#9825)
dont preserve sortedness in offset_by for tz-aware non-constant durations (#9818)
Remove stray arr.eval references (#9821)
fix row-encode of null data (#9813)
allow +00:00 when loading from arrow (#9747)
improve/fix write_database handling of db schema and quoted table names (#9788)
fix row-count schema (#9797)
fix supertype detection (#9787)
fix import error when writing parquet with pyarrow (#9760)

Refactor failing test (#9823)
Remove stray arr.eval references (#9821)
Remove old cut/qcut (#9763)
improve note about the behaviour when converting from ns-precision temporal values to python-native types (#9798)
Small updates to issue templates (#9789)
More cleanup around arange (#9769)
add missing last entry (#9782)
Add rows_by_key docs (#9766)