Function dict_setdefaultstringref

include/pybind11/pytypes.h:1034–1056

PyDict_SetDefaultRef was added in Python 3.13.0a4. See also: https://github.com/python/pythoncapi-compat/blob/main/pythoncapi_compat.h

// PyDict_SetDefaultRef was added in Python 3.13.0a4.
// See also: https://github.com/python/pythoncapi-compat/blob/main/pythoncapi_compat.h
inline PyObject *dict_setdefaultstringref(PyObject *v, const char *key, PyObject *defaultobj) {
#if PY_VERSION_HEX >= 0x030D00A4
    PyObject *kv = PyUnicode_FromString(key);
    if (kv == nullptr) {
        throw error_already_set();
    }

    PyObject *rv = nullptr;
    if (PyDict_SetDefaultRef(v, kv, defaultobj, &rv) < 0) {
        Py_DECREF(kv);
        throw error_already_set();
    }
    Py_DECREF(kv);
    return rv;
#else
    PyObject *rv = dict_setdefaultstring(v, key, defaultobj);
    if (rv == nullptr || PyErr_Occurred()) {
        throw error_already_set();
    }
    Py_XINCREF(rv);
    return rv;
#endif
}

// Helper aliases/functions to support implicit casting of values given to python
// accessors/methods. When given a pyobject, this simply returns the pyobject as-is; for other C++