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This article explains the history and drawbacks of Python’s Global Interpreter Lock, introduces PEP 703’s optional no‑GIL build, provides step‑by‑step installation instructions, showcases performance benchmarks, and discusses the impact on developers and the Python community.
Recent updates from the Python Steering Council indicate a positive response to PEP 703, which proposes making the Global Interpreter Lock optional in CPython, outlining short‑, medium‑, and long‑term plans for experimental no‑GIL builds, community support, and potential default adoption.
The article explains the launch of py‑free‑threading.github.io, describes the Global Interpreter Lock (GIL) and its performance impact, introduces PEP 703 which makes the GIL optional, and outlines why free‑threaded Python in CPython 3.13 is a significant step for multithreaded performance.
The article explains that the Python community is planning to make the Global Interpreter Lock optional, describing what the GIL is, its limitations, the contributions behind the change, and a multi‑stage roadmap from experimental builds in Python 3.13/3.14 to a long‑term default no‑GIL configuration.
Meta is backing PEP 703, which proposes adding a --disable-gil build option to CPython so that Python code can run without the Global Interpreter Lock, improving multithreaded performance on multi‑core CPUs, with Meta promising engineering resources to help implement it by 2025.
Meta is promoting PEP 703, which proposes adding a --disable-gil build option to CPython so Python can run without the Global Interpreter Lock, and has pledged three engineer‑years by 2025 to help implement the change, while also noting its Threads product already runs on a heavily modified CPython backend.