polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Trying to package Polars for NixOS results in an error E0599
- Do not enclose str items in quotes in HTML repr
- Make types explicit in `Expr` objects to facilitate type hinting/checking and to clarify applicable methods for each data type
- `pl.struct` silently returns null values when incompatible with given `schema`
- `from_pandas` behaviour change/regression (series constructor "strict" changes)
- Incorrect dtype when doing .over(my_col, mapping_strategy="join") on LazyFrames.
- Keep columns in `.rolling()
- Tweak data frame HTML repr
- Poor sampling performance of polars compared to full scan or duckdb
- Seed RNG when using random numbers
- Docs
- Rust not yet supported