# Polars 1.4.1 — Python Polars 1.4.1

- Product: Polars (https://whatsnew.fyi/product/polars)
- Vendor: Polars
- Date: 2024-08-04
- Version: 1.4.1
- Original notes: https://github.com/pola-rs/polars/releases/tag/py-1.4.1
- Permalink: https://whatsnew.fyi/product/polars/releases/1.4.1

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- **changed** — Improve integer fast path Parquet dict encoding
- **changed** — Speed up writing of Parquet primitive values
- **changed** — Remove temporary allocations in Parquet
- **added** — Add boolean Parquet HybridRle encoding
- **added** — Support passing Worksheet objects to the write_excel method
- **fixed** — Fix subtraction with overflow on negative slice offset in Parquet
- **fixed** — Fix drop selector

##### 🚀 Performance improvements

- Integer fast path Parquet dict encoding (#18030)
- Speedup writing of Parquet primitive values (#18020)
- Remove temporary allocations in Parquet (#18013)

##### ✨ Enhancements

- Add boolean Parquet HybridRle encoding (#18022)
- Support passing `Worksheet` objects to the `write_excel` method (#18031)

##### 🐞 Bug fixes

- Subtraction with overflow on negative slice offset in Parquet (#18036)
- Fix drop selector (#18034)

##### 📖 Documentation

- Update map\_batches docstring (#18001)

##### 🛠️ Other improvements

- Add @coastalwhite to parquet codeowners (#18032)
- Minor bump to `comfy-table` version (#18028)

Thank you to all our contributors for making this release possible!
@alexander-beedie, @coastalwhite, @deanm0000, @nameexhaustion and @ritchie46