Python 3.13.1 has officially arrived, marking the first bug-fix release in the Python 3.13 series. While the initial 3.13.0 release in October 2024 brought "headline" features like a better REPL and experimental multi-threading, this update focuses on stabilizing those ambitious changes for production-ready environments.
The most significant shift in Python 3.13 is the experimental support for running . python 3.13.1 released today
The free-threaded future is coming. The JIT is coming. But today, we got a quieter gift: a Python that crashes less, pastes correctly, and respects your terminal. Python 3
The 3.13.1 update fixes a "lazy build" issue and corrects several bugs where the JIT produced incorrect results or crashed during complex operations. These fixes are vital for the "copy-and-patch" mechanism to gain trust among performance-critical developers. The free-threaded future is coming
Python 3.13 was released on October 7, 2024. For full details, see the changelog. Python documentation Python Release Python 3.13.0rc1