_PyErr_ChainExceptions1 no longer avallable to extension modules in Python 3.13 alpha headers

Bug report

Bug description:

The API _PyErr_ChainExceptions1 has been removed from public headers as part of this change in Python 3.13 alpha. It is the only C API available to chain exceptions replacing _PyErr_ChainExceptions. That change was publicly documented in the 3.12 whatsnew.

In my extemsion module I use _PyErr_ChainExceptions for exception chaining for Python <= 3.11 from PEP 490 and _PyErr_ChainExceptions1for 3.12+.

Please provide an approved way for C extensions to continue to chain exceptions. The function is still present and I can duplicate the prototype for all to continue working, but that is not a desirable solution.

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-116900

Inizia con la modifica di Python 3.13 alpha referenziata in issue 106320 e con il PR collegato gh-116900, quindi esamina come la C API pubblica espone il concatenamento delle eccezioni in Python 3.11–3.13. Il lavoro è completato quando è stato stabilito un metodo approvato per consentire agli extension modules di concatenare le eccezioni senza duplicare un prototipo privato.