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- **Read more:** [AWS Bedrock AgentCore Ate My NAT Gateway Budget—Here's Why](https://opensourcebeat.com/article/aws-bedrock-agentcore-ate-my-nat-gateway-budgetheres-why/) - **Read more:** [Python 3.15 Alpha 6: JIT Speedups Land, But 2026 Feels Like a Lifetime Away](https://opensourcebeat.com/article/python-3150-alpha-6/) Frequently Asked Questions **What does Python 3.13.9 fix exactly?** Just one bug: inspect.getsourcelines failing after decorators with comments or blank lines. Nothing else changed from 3.13.8. **Should I upgrade my Python to 3.13.9?** If you're on 3.13 and hit the bug — yes. Otherwise, stick to stable for prod. **When's the next Python 3.13 release?** Check PEP 745 schedule. More expedited if bugs pop; 3.14 alphas soon.

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Python 3.13.9 Patches a Sneaky inspect Bug — Devs, Rejoice (Quietly)

If you're knee-deep in decorators and source inspection, Python 3.13.9 just yanked you from a debugging nightmare. Otherwise? Meh — but here's why it stings.

theAIcatchup Apr 07, 2026 4 min read

⚡ Key Takeaways

Python 3.13.9 fixes a critical inspect.getsourcelines regression for decorator users. 𝕏
Expedited release shows Python's quick response to community bugs. 𝕏
3.13 series still maturing; consider stability for production. 𝕏

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Community-driven. Code-first.

#Python 3.13 #Python 3.13.9 #Python release #bug fix #inspect module

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Originally reported by Python Insider

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