polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Pickling for large `LazyFrame`s way slower than for `DataFrame`s
- Native consistent hashing in Polars
- Series.equals inconsistent for list vs scalar dtypes
- Improve Wasm compatibility: parquet feature transitively enables object_store and mio even when cloud is disabled
- Support union types
- json_decode ComputeError when casting empty struct or list to string; inconsistent behavior with read_ndjson
- Raise error instead of dropping extra input fields on `struct.rename_fields`
- Orient keyword is rejected when creating a one-line dataframe
- Repeated work with streaming engine when unnesting structs
- fix: Disallow broadcasting non-scalars
- Docs
- Rust not yet supported