Function _convert_from_commastring

numpy/core/src/multiarray/descriptor.c:724–754

* comma-separated string * this is the format developed by the numarray records module and implemented * by the format parser in that module this is an alternative implementation * found in the _internal.py file patterned after that one -- the approach is * to try to convert to a list (with tuples if any repeat information is * present) and then call the _convert_from_list) * * TODO: Callin

 *       a good idea. This should all be converted to C code.
 */
static PyArray_Descr *
_convert_from_commastring(PyObject *obj, int align)
{
    PyObject *listobj;
    PyArray_Descr *res;
    PyObject *_numpy_internal;
    assert(PyUnicode_Check(obj));
    _numpy_internal = PyImport_ImportModule("numpy.core._internal");
    if (_numpy_internal == NULL) {
        return NULL;
    }
    listobj = PyObject_CallMethod(_numpy_internal, "_commastring", "O", obj);
    Py_DECREF(_numpy_internal);
    if (listobj == NULL) {
        return NULL;
    }
    if (!PyList_Check(listobj) || PyList_GET_SIZE(listobj) < 1) {
        PyErr_SetString(PyExc_RuntimeError,
                "_commastring is not returning a list with len >= 1");
        Py_DECREF(listobj);
        return NULL;
    }
    if (PyList_GET_SIZE(listobj) == 1) {
        res = _convert_from_any(PyList_GET_ITEM(listobj, 0), align);
    }
    else {
        res = _convert_from_list(listobj, align);
    }
    Py_DECREF(listobj);
    return res;
}

static int
_is_tuple_of_integers(PyObject *obj)