#if PY_MAJOR_VERSION >= 3
  #define MOD_ERROR_VAL NULL
  #define MOD_SUCCESS_VAL(val) val
  #define MOD_INIT(name) PyMODINIT_FUNC PyInit_##name(void)
  #define MOD_DEF(ob, name, doc, methods) \
          static struct PyModuleDef moduledef = { \
            PyModuleDef_HEAD_INIT, name, doc, -1, methods, }; \
          ob = PyModule_Create(&moduledef);
  #define PYUnicode_STRING PyUnicode_FromString
  #define PYUnicode_UNICODE(x)  PyBytes_AS_STRING(PyUnicode_AsEncodedString(x, "utf-8",""))
#else
  #define MOD_ERROR_VAL
  #define MOD_SUCCESS_VAL(val)
  #define MOD_INIT(name) void init##name(void)
  #define MOD_DEF(ob, name, doc, methods)         \
        ob = Py_InitModule3(name, methods, doc);
  #define PYUnicode_STRING PyString_FromString
 #define  PYUnicode_UNICODE PyString_AsString
#endif