code: def __iter__(self):
      raise TypeError("Iterating canonical object is not implemented")
  
imports: from __future__ import absolute_import
  import re
  import sys
  import copy
  import logging
  from .None import tools
  from datetime import date, datetime
  import enum
  import six
label_desc: Use image node_id 1 for calling the CanonicalObject obj's underlying member method code with example usage: obj.__iter__() without return types