Release Python Polars 0.20.22 · pola-rs/polars

🚀 Performance improvements

Improved type-inference for read_excel and read_ods, use calamine engine for read_ods (#15808)
Fix quadratic in binview growable same source (#15734)
use two binary searches for equality mask when data is sorted (#15702)
improve filter parallelism (#15686)

Minor type-inference update for read_database (#15809)
Improved type-inference for read_excel and read_ods, use calamine engine for read_ods (#15808)
dt.truncate supports broadcasting lhs (#15768)
Expressify str.json_path_match (#15764)
raise if storage_options is passed to read_csv but fsspec isnt available (#15778)
Support decimal float parsing in CSV (#15774)
Add context trace to LazyFrame conversion errors (#15761)
Improve error message when passing invalid input to lit (#15718)
Remove outdated join validation checks (#15701)

drop-nulls edge case; remove drop-nulls special case (#15815)
ewm_mean_by was skipping initial nulls when it was already sorted by "by" column (#15812)
Consult cgroups to determine free memory (#15798)
raise if index count like 2i is used when performing rolling, group_by_dynamic, upsample, or other temporal operatios (#15751)
Don't deduplicate sort that has slice pushdown (#15784)
Allow passing files opened by fsspec in read_parquet (#15770)
Fix incorrect is_between pushdown to scan_pyarrow_dataset (#15769)
Handle null index correctly for list take (#15737)
Preserve lexical ordering on concat (#15753)
Remove incorrect unsafe pointer cast for int -> enum (#15740)
pass series name to apply for cut/qcut (#15715)
count of null column shouldn't panic in agg context (#15710)
manual cache (#15711)
Ensure we don't hold onto Mutex when grabbing join tuples (#15704)
allow null dtypes in UDFs if they match the schema (#15699)
Respect join_null argument for semi/anti joins (#15696)
Ensure we don't hold RwLock when spawning group parallelism in w… (#15697)
Ensure empty with_columns is a no-op (#15694)
Include predicate in cache state union (#15693)
Add the missing feature flag for ewm_mean_by (#15687)
8/16-bits int could also apply in place for log expr (#15680)
prepare_expression_for_context shouldn't panic if exceptions raised from optimizer (#15681)