polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Build pyarrow predicates via pyarrow API instead of string formatting / eval in `predicate_to_pa`
- Optimize `get_ranges()` for IPC from S3
- Big-endian correctness gaps in Arrow view/aligned-bytes/bitmap internals
- Nullable struct from dataclass or NamedTuple
- Adaptive prefetch concurrency for Parquet / IPC
- feat: Add `cum_mean` Expression and Series method
- Filters not pushed down horizontal concat
- `@deprecated()` Does Not Issue Warning When Under `@deprecate_renamed_parameter()`
- Support negative indexing for the "length" parameter of list.slice
- String methods is not available for String Enum
- Docs
- Rust not yet supported