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gh-123242: Note that type.__annotations__ may not exist (#124557)

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Closes #123242. The real criterion is that the attribute does not
exist on heap types, but I don't think we should discuss heap vs.
static types in the language reference.
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Jelle Zijlstra 2024-09-25 16:08:14 -07:00 • committed by GitHub
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Doc/reference/datamodel.rst
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@ -1045,7 +1045,8 @@ Special attributes
Accessing the :attr:`!__annotations__` attribute of a class
object directly may yield incorrect results in the presence of
metaclasses. Use :func:`annotationlib.get_annotations` to
metaclasses. In addition, the attribute may not exist for
some classes. Use :func:`annotationlib.get_annotations` to
retrieve class annotations safely.
.. versionchanged:: 3.14