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gh-67377: Document that PyErr_SetString, etc. chain exceptions #20329

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gh-67377: Document that PyErr_SetString, etc. chain exceptions #20329

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bpo-23188: Document that PyErr_SetString, etc. chains exceptions
cjerdonek May 23, 2020
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Merge branch 'main' into issue-23188-set-object-docs
AlexWaygood Oct 30, 2022
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Merge branch 'main' into issue-23188-set-object-docs
arhadthedev Apr 26, 2023
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Merge branch 'main' into issue-23188-set-object-docs
hugovk Sep 11, 2023
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Update Doc/c-api/exceptions.rst
iritkatriel Jan 5, 2024
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Merge branch 'main' into issue-23188-set-object-docs
AlexWaygood Jan 5, 2024
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5 changes: 4 additions & 1 deletion Doc/c-api/exceptions.rst
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Expand Up @@ -124,7 +124,10 @@ Raising exceptions

These functions help you set the current thread's error indicator.
For convenience, some of these functions will always return a
``NULL`` pointer for use in a ``return`` statement.
``NULL`` pointer for use in a ``return`` statement. Also, for all of the
functions in this subsection, if an exception has already been caught,
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@serhiy-storchaka raised an issue with this terminology, I don't think the previous reviewers' comments have been addressed: #20329 (comment)

that exception will be implicitly chained (i.e. the last caught exception
will become the new exception's :attr:`~BaseException.__context__`).


.. c:function:: void PyErr_SetString(PyObject *type, const char *message)
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Documentation/2020-05-22-20-55-23.bpo-23188.Al3gI2.rst
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@@ -0,0 +1,2 @@
Mention that :c:func:`PyErr_SetString`, :c:func:`PyErr_SetObject`, and
friends implicitly chain exceptions.
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