Cpython Release November 2025 New -

  • Third-party dependencies:
  • Packaging and distribution:
  • Migration steps (practical):

    • The CPython team has been working hard to improve the performance of the interpreter, and the November 2025 release is no exception. This version includes several performance enhancements, including:

    Python continues to lead in the "Typed Python" ecosystem. cpython release november 2025 new

    Every November, the core developers release an internal memo called "Performance of the Next Release." In 2025, the numbers are impressive. Third-party dependencies:

    | Metric | Python 3.12 (Baseline) | Python 3.13 | Python 3.14.1 (Nov 2025) | | :--- | :--- | :--- | :--- | | Geometric mean (pyperformance) | 1.00x | 1.18x | 1.29x | | Regex operations | 1.00x | 1.10x | 1.35x | | Async I/O | 1.00x | 1.05x | 1.20x (IO_uring support) | | Startup time (Django app) | 2.1 sec | 1.9 sec | 1.6 sec | Packaging and distribution:

    The November release specifically patches a slowdown discovered in io module buffering and optimizes the asyncio event loop to use io_uring on Linux kernels 6.0+.

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