polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- fix(python): resolve DST ambiguity in from_repr for timezone-aware datetimes
- Parsing ambiguous timestamps in `polars.from_repr`
- Predicate pushdown in IO Plugins documentation
- Dynamic string replacement fails when `POLARS_MAX_THREADS=1`
- pl.first() to support pl.all()
- feat: Lock-free memory manager with spill-to-disk and fully OOC multiplexer
- Option to normalize floats written to Parquet
- Speed up small dtype series sums with a upcast sum kernel
- `.struct.unnest()` performance versus frame-level unnest
- Non-nullable list values export without outer mask
- Docs
- Rust not yet supported