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gh-115754: Add Py_GetConstant() function (#116883)

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Add Py_GetConstant() and Py_GetConstantBorrowed() functions.

In the limited C API version 3.13, getting Py_None, Py_False,
Py_True, Py_Ellipsis and Py_NotImplemented singletons is now
implemented as function calls at the stable ABI level to hide
implementation details. Getting these constants still return borrowed
references.

Add _testlimitedcapi/object.c and test_capi/test_object.py to test
Py_GetConstant() and Py_GetConstantBorrowed() functions.
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Victor Stinner 2024-03-21 17:07:00 +01:00 • committed by GitHub
parent 5a76d1be8e
commit 8bea6c411d
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22 changed files with 312 additions and 6 deletions
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Python/pylifecycle.c
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@ -687,6 +687,10 @@ pycore_init_global_objects(PyInterpreterState *interp)
_PyUnicode_InitState(interp);
if (_Py_IsMainInterpreter(interp)) {
_Py_GetConstant_Init();
}
return _PyStatus_OK();
}