Python 313 Release Notes Verified __full__ < 95% Quick >

The default interactive shell has been completely overhauled, based on code from the PyPy project. It now offers features previously only available in third-party tools:

: Leading indentation in docstrings is now automatically stripped, reducing the size of .pyc files and overall memory usage. python 313 release notes verified

What is the actual speed improvement for regular code (without the experimental JIT)? The Python core team publishes the pyperformance benchmark suite. Verified results from Python 3.13 vs 3.12: The Python core team publishes the pyperformance benchmark

: A significantly upgraded REPL based on PyPy, featuring multi-line editing, color support, and interactive help. Experimental Free-Threading (PEP 703) : Users can now run Python without the Global Interpreter Lock (GIL) This version focuses on performance foundations, such as

| Platform | Status | |----------|--------| | iOS (PEP 730) | ✅ Tier 3 (experimental) | | WASI (PEP 731) | ✅ Tier 3 | | Android | No official tier, but community patches merged | | macOS | 10.9 (Mavericks) minimum → now 10.13 (High Sierra) | | Windows | Windows 10/11 only; Windows 7/8 unsupported | | Linux | glibc 2.17+ |

Python 3.13, officially released on , marks a significant milestone in the language's evolution, introducing transformative experimental features and major quality-of-life improvements for developers. This version focuses on performance foundations, such as the removal of the Global Interpreter Lock (GIL) and the introduction of a Just-In-Time (JIT) compiler, while also providing a modern interactive experience. Key Highlights: A Reimagined Developer Experience 1. A Brand New Interactive Interpreter (REPL)