Will Python 3.13 or 3.14 allow you to run Python without the GIL?

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resolved Oct 16

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YES

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The Python Steering Council announced they intend to accept PEP 703, which would allow for a version of Python without the GIL.

"Short term, we add the no-GIL build as an experimental build mode, presumably in 3.13 (if it slips to 3.14, that is not a problem)."

If Python 3.13 or 3.14 allows running a version of Python without the GIL (even if it is an "experimental build mode"), this resolves to YES.

I won't bet on this market.

More details:

https://discuss.python.org/t/a-steering-council-notice-about-pep-703-making-the-global-interpreter-lock-optional-in-cpython/30474

A Steering Council notice about PEP 703 (Making the Global Interpreter Lock Optional in CPython)

Posting for the whole Steering Council, on the subject of @colesbury’s PEP 703 (Making the Global Interpreter Lock Optional in CPython). Thank you, everyone, for responding to the poll on the no-GIL proposal. It’s clear that the overall sentiment is positive, both for the general idea and for PEP 7…

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@mods, this user appears to be inactive. The question should resolve to True.

bought Ṁ2,000 YES

It's out https://docs.python.org/3.13/whatsnew/3.13.html#whatsnew313-free-threaded-cpython

https://github.com/python/cpython/pull/116338

predicted YES

Sort of relevant comment from Guido:

> NoGIL will take years to stabilize, and I expect you won’t be able to count on it existing for the next 4-5 releases.

https://discuss.python.org/t/supporting-per-interpreter-gil-from-rust-pyo3/36114/3

Meta and Anaconda both announced that they could company developer time to help if the PEP was accepted. Since so much work has already been done by Sam Gross it seems very unlikely that it won't make it in by 3.14. Especially since it will be an experimental build that you have to opt into.

Meta's promise: https://discuss.python.org/t/a-fast-free-threading-python/27903/99
Anaconda's promise: https://discuss.python.org/t/pep-703-making-the-global-interpreter-lock-optional/22606/121

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