polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Creating a `DataFrame` from a list of dicts seems to bypass `strict=True`
- feat: Add nested loop joins for arbitrary boolean predicates
- `.shift()` inside `.replace()` PanicException
- Categorical casting doesn't work correctly, making search_sorted() give wrong results
- `join_asof()` panics when `tolerance=[None]`
- .sink_parquet(...) causes data loss and doesn't maintain order
- fill_null silently change pl.Array to pl.List
- `scan_parquet` runs forever on AWS airflow - version 1.17
- DataFrame intitialization from list of dataclasses is slow
- `Series.__array_ufunc__` does not properly support `datatypes.Array`
- Docs
- Rust not yet supported