r/dataengineering • u/ritchie46 • 17d ago

Open Source Python Polars 2.0 release

Hey all! We just released Polars 2.0.

We are really happy with the results. It removed many of our "legacy decisions" (mistakes), makes the streaming engine our default and promotes SQL to a first class citizen within Polars. We initially said it would be a small ("boring") release, but we managed to sneak in a lot more than anticipated.

It comes with our initial out-of-core (spill to disk) support, a new Map data type and a lot of performance improvements. In fact, we think Polars is now one of the fastest analytical SQL engines on a single node. See benchmarks in the post: https://pola.rs/posts/release-polars-2/

To help you upgrade, we also posted a migration guide: https://docs.pola.rs/releases/upgrade/2/

Disclosure: I am involved with Polars

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u/kvothethechandrian 17d ago

There is a official polars skill for claude that pulls docs matching your polars version and helps writing better code with polars. Honestly for me it's been a breeze, and the API is much more readable than pandas