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gh-106310 - document the __signature__ attribute (#106311)

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Document the __signature__ attribute

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
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Gouvernathor 2023-10-21 00:54:02 +02:00 • committed by GitHub
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@ -640,6 +640,9 @@ function.
Accepts a wide range of Python callables, from plain functions and classes to Accepts a wide range of Python callables, from plain functions and classes to
:func:`functools.partial` objects. :func:`functools.partial` objects.
If the passed object has a ``__signature__`` attribute, this function
returns it without further computations.
For objects defined in modules using stringized annotations For objects defined in modules using stringized annotations
(``from __future__ import annotations``), :func:`signature` will (``from __future__ import annotations``), :func:`signature` will
attempt to automatically un-stringize the annotations using attempt to automatically un-stringize the annotations using
@ -763,6 +766,8 @@ function.
sig = MySignature.from_callable(min) sig = MySignature.from_callable(min)
assert isinstance(sig, MySignature) assert isinstance(sig, MySignature)
Its behavior is otherwise identical to that of :func:`signature`.
.. versionadded:: 3.5 .. versionadded:: 3.5
.. versionadded:: 3.10 .. versionadded:: 3.10