polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Reading CSV lazy vs eager behaves inconsistently
- Change supertype of `<signed integer type>`, `UInt64` from `Float64` to `Int128`
- CI doesn't seem to cache compilation at all
- Warning about sortedness doesn't appear in example of `join_asof()`
- `iter_batches` support for `read_database_uri` with connectorx
- Slow serial schema resolution of `concat()`ted LazyFrames
- Automatically parse datetimes with 12-hour time (AM/PM)
- Have df.head() ignore set_tbl_rows Config
- Support `adjust=True` in `ewm_mean_by`
- DataFrame construction with list vs non-list changes integer dtype
- Docs
- Rust not yet supported