polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Allow applying a filter to all expressions in a rolling or group_by context
- iter_rows(named=True) raises KeyError in 1.27.1
- `sink_parquet()` using much more memory in recent versions for heavily nested parquet files
- New function: `list.zip`
- Memory leak (starting from polars 1.28)
- TypeError is raised when passing a set to pl.Enum
- Large memory usage in scan_parquet+select pl.max
- DataFrame creation PanicException with Series inside nested list
- Memory usage regression in parquet reading after 1.27.1
- GroupBy First/Last Preserve Original DataFrame
- Docs
- Rust not yet supported