# Polars 1.17.1 — Python Polars 1.17.1

- Product: Polars (https://whatsnew.fyi/product/polars)
- Vendor: Polars
- Date: 2024-12-09
- Version: 1.17.1
- Original notes: https://github.com/pola-rs/polars/releases/tag/py-1.17.1
- Permalink: https://whatsnew.fyi/product/polars/releases/1.17.1

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- **fixed** — Fix incorrect lazy select(len()) with some select orderings
- **fixed** — Fix assertion panic on LazyFrame scratch.is_empty()

##### 🐞 Bug fixes

- Fix incorrect lazy `select(len())` with some select orderings (#20222)
- Fix assertion panic on LazyFrame `scratch.is_empty()` (#20219)

Thank you to all our contributors for making this release possible!
@nameexhaustion and @ritchie46