Yup here’s a list of optimizations that Polars does to achieve the speed that it does https://pola-rs.github.io/polars-book/user-guide/#current-status https://

Yup here’s a list of optimizations that Polars does to achieve the speed that it does https://pola-rs.github.io/polars-book/user-guide/#current-status https://pola-rs.github.io/polars-book/user-guide/#current-st... Polars’ lazy evaluation is a big deal — this lets it do query plan optimization. Whereas in Pandas every step is eager so it can’t look ahead to eliminate redundant steps. You basically can’t do a lot of query optimization in a multi step transform.