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[3.12] gh-102778: update documentation of PyErr_PrintEx and traceback.print_last() regarding sys.last_exc (GH-105190) (#105246)

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gh-102778: update documentation of PyErr_PrintEx and traceback.print_last() regarding sys.last_exc (GH-105190)
(cherry picked from commit 0dafc785ee)

Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
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Miss Islington (bot) 2023-06-02 09:04:22 -07:00 • committed by GitHub
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Doc/c-api/exceptions.rst
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@ -60,9 +60,14 @@ Printing and clearing
Call this function **only** when the error indicator is set. Otherwise it
will cause a fatal error!
If *set_sys_last_vars* is nonzero, the variables :data:`sys.last_type`,
:data:`sys.last_value` and :data:`sys.last_traceback` will be set to the
type, value and traceback of the printed exception, respectively.
If *set_sys_last_vars* is nonzero, the variable :data:`sys.last_exc` is
set to the printed exception. For backwards compatibility, the
deprecated variables :data:`sys.last_type`, :data:`sys.last_value` and
:data:`sys.last_traceback` are also set to the type, value and traceback
of this exception, respectively.
.. versionchanged:: 3.12
The setting of :data:`sys.last_exc` was added.
.. c:function:: void PyErr_Print()