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[3.13] gh-128307: Update what's new in 3.13 with create_task changes of asyncio (#134304) by gvanrossum · Pull Request #134335 · python/cpython · GitHub

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[3.13] gh-128307: Update what's new in 3.13 with create_task changes of asyncio (#134304) #134335

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gvanrossum merged 1 commit into from
May 20, 2025
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[3.13] gh-128307: Update what's new in 3.13 with create_task changes of asyncio (#134304) #134335

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16 changes: 16 additions & 0 deletions Doc/whatsnew/3.13.rst
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Expand Up @@ -739,6 +739,22 @@ asyncio
never awaited).
(Contributed by Arthur Tacca and Jason Zhang in :gh:`115957`.)

* The function and methods named ``create_task`` have received a new
``**kwargs`` argument that is passed through to the task constructor.
This change was accidentally added in 3.13.3,
and broke the API contract for custom task factories.
Several third-party task factories implemented workarounds for this.
In 3.13.4 and later releases the old factory contract is honored
once again (until 3.14).
To keep the workarounds working, the extra ``**kwargs`` argument still
allows passing additional keyword arguments to :class:`~asyncio.Task`
and to custom task factories.

This affects the following function and methods:
:meth:`asyncio.create_task`,
:meth:`asyncio.loop.create_task`,
:meth:`asyncio.TaskGroup.create_task`.
(Contributed by Thomas Grainger in :gh:`128307`.)

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