C function used by numpy multiply function

from_multiarraymodule.c

static PyObject *
_vec_string(PyObject *NPY_UNUSED(dummy), PyObject *args, PyObject *kwds)
{
    PyArrayObject* char_array = NULL;
    PyArray_Descr *type = NULL;
    PyObject* method_name;
    PyObject* args_seq = NULL;

    PyObject* method = NULL;
    PyObject* result = NULL;

    if (!PyArg_ParseTuple(args, "O&O&O|O",
                PyArray_Converter, &char_array,
                PyArray_DescrConverter, &type,
                &method_name, &args_seq)) {
        goto err;
    }

    if (PyArray_TYPE(char_array) == NPY_STRING) {
        method = PyObject_GetAttr((PyObject *)&PyString_Type, method_name);
    }
    else if (PyArray_TYPE(char_array) == NPY_UNICODE) {
        method = PyObject_GetAttr((PyObject *)&PyUnicode_Type, method_name);
    }
    else {
        PyErr_SetString(PyExc_TypeError,
                "string operation on non-string array");
        goto err;
    }
    if (method == NULL) {
        goto err;
    }