Function array_tofile

numpy/core/src/multiarray/methods.c:653–700

 */

static PyObject *
array_tofile(PyArrayObject *self, PyObject *args, PyObject *kwds)
{
    int own;
    PyObject *file;
    char *sep = "";
    char *format = "";
    static char *kwlist[] = {"file", "sep", "format", NULL};

    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|ss:tofile", kwlist,
                                     &file,
                                     &sep,
                                     &format)) {
        return NULL;
    }

    file = NpyPath_PathlikeToFspath(file);
    if (file == NULL) {
        return NULL;
    }
    if (PyBytes_Check(file) || PyUnicode_Check(file)) {
        Py_SETREF(file, npy_PyFile_OpenFile(file, "wb"));
        if (file == NULL) {
            return NULL;
        }
        own = 1;
    }
    else {
        own = 0;
    }

    int file_ret = PyArray_ToFileObject(self, file, sep, format);
    int close_ret = 0;

    if (own) {
        PyObject *err_type, *err_value, *err_traceback;
        PyErr_Fetch(&err_type, &err_value, &err_traceback);
        close_ret = npy_PyFile_CloseFile(file);
        npy_PyErr_ChainExceptions(err_type, err_value, err_traceback);
    }

    Py_DECREF(file);

    if (file_ret || close_ret) {
        return NULL;
    }
    Py_RETURN_NONE;
}

static PyObject *
array_toscalar(PyArrayObject *self, PyObject *args)