Python 313 Release Notes Verified May 2026

| Area | Improvement | |------|--------------| | list.append | ~10% faster due to reduced reference counting | | json module | Parsing speed up by 15-20% | | asyncio | Task creation and scheduling ~30% faster | | compile() | Bytecode compilation cache improvements |

Python 3.13.0 final, released October 7, 2024. Do you have a specific feature you’d like to see benchmarked or tested? Let me know, and I will provide verified reproduction steps. python 313 release notes verified

For most developers, upgrading to Python 3.13 is safe verifying that your dependencies don’t rely on removed modules. The performance improvements in asyncio and json alone make it worthwhile. | Area | Improvement | |------|--------------| | list

PEP 705, PEP 728, PEP 696 5. Performance Optimizations Beyond the JIT, Python 3.13 includes several verified speedups that benefit all users: For most developers, upgrading to Python 3