Function PyArray_CheckFromAny

numpy/core/src/multiarray/ctors.c:1762–1786

NUMPY_API * steals a reference to descr -- accepts NULL */

 * steals a reference to descr -- accepts NULL
 */
NPY_NO_EXPORT PyObject *
PyArray_CheckFromAny(PyObject *op, PyArray_Descr *descr, int min_depth,
                     int max_depth, int requires, PyObject *context)
{
    npy_dtype_info dt_info = {NULL, NULL};

    int res = PyArray_ExtractDTypeAndDescriptor(
        descr, &dt_info.descr, &dt_info.dtype);

    Py_XDECREF(descr);

    if (res < 0) {
        Py_XDECREF(dt_info.descr);
        Py_XDECREF(dt_info.dtype);
        return NULL;
    }

    PyObject* ret =  PyArray_CheckFromAny_int(
        op, dt_info.descr, dt_info.dtype, min_depth, max_depth, requires,
        context);

    Py_XDECREF(dt_info.descr);
    Py_XDECREF(dt_info.dtype);
    return ret;
}

/*
 * Internal version of PyArray_CheckFromAny that accepts a dtypemeta. Borrows