# Polars 1.8.2 — Python Polars 1.8.2

- Product: Polars (https://whatsnew.fyi/product/polars)
- Vendor: Polars
- Date: 2024-09-24
- Version: 1.8.2
- Original notes: https://github.com/pola-rs/polars/releases/tag/py-1.8.2
- Permalink: https://whatsnew.fyi/product/polars/releases/1.8.2

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Improve rename performance for Lazy API
- **changed** — Collapse cross-joins to faster joins
- **changed** — Improve scalar strict message
- **fixed** — Properly zip struct validities
- **fixed** — Fix out-of-bounds gather in categorical to int cast
- **fixed** — Fix AnyValue Series from Categorical/Enum
- **fixed** — Properly cast AnyValue string
- **fixed** — Fix stack overflow in JSON inference
- **fixed** — Use proper thread pool in cumulative_eval

##### 🚀 Performance improvements

- Improve rename performace for Lazy API (#18890)
- Collapse cross-joins to faster joins (#18633)

##### ✨ Enhancements

- Improve scalar strict message (#18904)

##### 🐞 Bug fixes

- Properly zip struct validities (#18886)
- Out-of-bounds gather in categorical->int cast (#18897)
- AnyValue Series from Categorical/Enum (#18893)
- Properly cast AnyValue string (#18888)
- Fix SO in json inference (#18887)
- Use proper thread pool in cumulative\_eval (#18885)

##### 📖 Documentation

- Fix broken user-guide API links (#18872)

Thank you to all our contributors for making this release possible!
@coastalwhite, @npielawski, @orlp, @ritchie46 and @siddharth-vi