PyMODINIT_FUNC PyInit_extension(void)

                #else

                #define INITERROR return

                void initextension(void)

                #endif
                {
                #if PY_MAJOR_VERSION >= 3
                    PyObject *module = PyModule_Create(&moduledef);
                #else
                    PyObject *module = Py_InitModule("extension", NULL);
                #endif
                    if (module == NULL)
                        INITERROR;
                #if PY_MAJOR_VERSION >= 3
                    return module;
                #endif
                }
                z