Hugging Face Transformers: Patch release v4.39.2

Source available — automated, not human-reviewed

Component: transformers · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

$ python -m pip install 'transformers==4.39.2'

📄 .MD

🔧 Bug Fixes 1

⚡ Executive Summary (TL;DR)

Hugging Face Transformers v4.39.2. Source highlight: Series of fixes for backwards compatibility (AutoAWQ and other quantization libraries, imports from `trainer_pt_utils`) and functionality (LLaMA tokenizer conversion)

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

🔧 Bug Fixes & Patches (1)

[`BC`] Fix BC for other libraries #29934

📄 View Raw Release Notes (Original Developer Log)

Series of fixes for backwards compatibility (AutoAWQ and other quantization libraries, imports from `trainer_pt_utils`) and functionality (LLaMA tokenizer conversion) * Safe import of LRScheduler #29919 * [`BC`] Fix BC for other libraries #29934 * [`LlamaSlowConverter`] Slow to Fast better support #29797

← Older Version Hugging Face Transformers v4.39.1 Newer Version → Hugging Face Transformers v4.39.3