Function array_fromstring

numpy/core/src/multiarray/multiarraymodule.c:2339–2376

}

static PyObject *
array_fromstring(PyObject *NPY_UNUSED(ignored), PyObject *args, PyObject *keywds)
{
    char *data;
    Py_ssize_t nin = -1;
    char *sep = NULL;
    Py_ssize_t s;
    static char *kwlist[] = {"string", "dtype", "count", "sep", "like", NULL};
    PyObject *like = Py_None;
    PyArray_Descr *descr = NULL;

    if (!PyArg_ParseTupleAndKeywords(args, keywds,
                "s#|O&" NPY_SSIZE_T_PYFMT "s$O:fromstring", kwlist,
                &data, &s, PyArray_DescrConverter, &descr, &nin, &sep, &like)) {
        Py_XDECREF(descr);
        return NULL;
    }
    if (like != Py_None) {
        PyObject *deferred = array_implement_c_array_function_creation(
                "fromstring", like, args, keywds, NULL, 0, NULL);
        if (deferred != Py_NotImplemented) {
            Py_XDECREF(descr);
            return deferred;
        }
    }

    /* binary mode, condition copied from PyArray_FromString */
    if (sep == NULL || strlen(sep) == 0) {
        /* Numpy 1.14, 2017-10-19 */
        if (DEPRECATE(
                "The binary mode of fromstring is deprecated, as it behaves "
                "surprisingly on unicode inputs. Use frombuffer instead") < 0) {
            Py_XDECREF(descr);
            return NULL;
        }
    }
    return PyArray_FromString(data, (npy_intp)s, descr, (npy_intp)nin, sep);
}