Fix some bugs and issues
This MR fixes some argument parsing problems caused by the wrong format definition and uses the Py_RETURN_NONE macro to increment the ref count of Py_None before returning it which caused issues when using VAPython.
This MR fixes some argument parsing problems caused by the wrong format definition and uses the Py_RETURN_NONE macro to increment the ref count of Py_None before returning it which caused issues when using VAPython.