Function PyArray_IntpFromSequence

numpy/core/src/multiarray/conversion_utils.c:1116–1147

NUMPY_API * PyArray_IntpFromSequence * Returns the number of integers converted or -1 if an error occurred. * vals must be large enough to hold maxvals */

 * vals must be large enough to hold maxvals
 */
NPY_NO_EXPORT int
PyArray_IntpFromSequence(PyObject *seq, npy_intp *vals, int maxvals)
{
    PyObject *seq_obj = NULL;
    if (!PyLong_CheckExact(seq) && PySequence_Check(seq)) {
        seq_obj = PySequence_Fast(seq,
            "expected a sequence of integers or a single integer");
        if (seq_obj == NULL) {
            /* continue attempting to parse as a single integer. */
            PyErr_Clear();
        }
    }

    if (seq_obj == NULL) {
        vals[0] = dimension_from_scalar(seq);
        if (error_converting(vals[0])) {
            if (PyErr_ExceptionMatches(PyExc_TypeError)) {
                PyErr_Format(PyExc_TypeError,
                        "expected a sequence of integers or a single "
                        "integer, got '%.100R'", seq);
            }
            return -1;
        }
        return 1;
    }
    else {
        int res;
        res = PyArray_IntpFromIndexSequence(seq_obj, vals, (npy_intp)maxvals);
        Py_DECREF(seq_obj);
        return res;
    }
}


/**