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gh-134370: Added clarification on instance annotations (#134387)

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Instances of classes cannot have annotations,
however sometimes they will erroneously have the
__annotations__ attribute
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Alex Kautz 2025-05-22 09:46:29 -04:00 • committed by GitHub
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Doc/howto/annotations.rst
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@ -248,4 +248,9 @@ quirks by using :func:`annotationlib.get_annotations` on Python 3.14+ or
:func:`inspect.get_annotations` on Python 3.10+. On earlier versions of
Python, you can avoid these bugs by accessing the annotations from the
class's :attr:`~type.__dict__`
(e.g., ``cls.__dict__.get('__annotations__', None)``).
(for example, ``cls.__dict__.get('__annotations__', None)``).
In some versions of Python, instances of classes may have an ``__annotations__``
attribute. However, this is not supported functionality. If you need the
annotations of an instance, you can use :func:`type` to access its class
(for example, ``annotationlib.get_annotations(type(myinstance))`` on Python 3.14+).