## 3 Polars Tricks for High-Performance Data Manipulation Almost every slow Polars script lacks in terms of one of these two: its expression engine written and executing in Rust across every core at its disposal, and its query optimizer that rewrites your work before any of it runs. Polars gets its speed from two places: its expression engine written and executing in Rust across every core at its disposal, and its query optimizer that rewrites your work before any of it runs. Almost every slow Polars script lacks in terms of one of those two. The awkward part is that the fast version and the…