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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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6
Include/sliceobject.h
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@ -8,7 +8,11 @@ extern "C" {
PyAPI_DATA(PyObject) _Py_EllipsisObject; /* Don't use this directly */
#define Py_Ellipsis (&_Py_EllipsisObject)
#if defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030D0000
# define Py_Ellipsis Py_GetConstantBorrowed(Py_CONSTANT_ELLIPSIS)
#else
# define Py_Ellipsis (&_Py_EllipsisObject)
#endif
/* Slice object interface */