>>> __name__ repr: __main__, <type 'str'> - no subtype of Node_Type
>>> MyNode repr: <class '__main__.MyNode'>, <type 'type'> - no subtype of Node_Type
>>> node repr: [Node "empty node"], <class '__main__.MyNode'> - subtype of Node_Type
>>> Blender repr: <module 'Blender' (built-in)>, <type 'module'> - no subtype of Node_Type