Function PyObject_CallOneArg

include/pyshim.hh:126–128

 */
#if PY_VERSION_HEX < 0x03090000 // Python version is less than 3.9
inline PyObject *PyObject_CallOneArg(PyObject *func, PyObject *arg) {
  return PyObject_CallFunction(func, "O", arg);
}
#endif

/**