For three decades, CPython’s Global Interpreter Lock has been the bane of multithreading. It prevents multiple native threads from executing Python bytecode at once, forcing true parallelism onto multiprocessing (with its memory overhead) or asyncio (with its mental overhead).
The following improvements are expected to be included in Python 3.13: python 3.13 news 2025 november
If you are a data scientist, systems programmer, or maintainer of high-concurrency web services, this is the version you have been waiting for since 1992. For three decades, CPython’s Global Interpreter Lock has
This November, the focus for developers using Python 3.13 is shifting from "experimental testing" to "production-ready implementation" as the first year of its groundbreaking features—like the —reaches maturity. 1. The Python 3.13 Legacy: From Experimental to Essential For three decades