this post was submitted on 12 Aug 2024
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Python

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GIL Become Optional in Python 3.13 (geekpython.in)
submitted 2 months ago by [email protected] to c/[email protected]
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GIL or Global Interpreter Lock can be disabled in Python version 3.13. This is currently experimental.

Python 3.13 brings major new features compared to Python 3.12 and one of them is free-threaded mode, which disables the Global Interpreter Lock, allowing threads to run more concurrently.

The GIL will be disabled when you configure the Python with the --disable-gil option which is nothing but a build configuration (free threading build) at the time of installation.

This will allow optionally enabling and disabling GIL using the environment variable PYTHON_GIL which can be set to 1 and 0 respectively.

It will also provide a command-line option -X gil which can also be set to 0 (disable) and 1 (enable).

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[โ€“] [email protected] 21 points 2 months ago

This is huge news. Great work to the contributors involved in making this happen.

[โ€“] [email protected] 9 points 2 months ago (1 children)

I learned relatedly that there's a page to track free threaded support for (non-pure python) packages (thanks PythonBytes).

Really cool to see this progressing so steadily.

[โ€“] [email protected] 3 points 2 months ago

Wake me up when pyside is on that list. I've been waiting for this day for a decade...

[โ€“] [email protected] 1 points 2 months ago

what kind of a reptile is python that it still have GILs until recently?

[โ€“] [email protected] -3 points 2 months ago (1 children)

This doesnโ€™t really jive with my understanding of semantic versioning/semver but I guess versioning is very challenging and political in the Pythonverse.