code: def __iter__(self):
      return iter(self._list)
  
imports: from __future__ import absolute_import
  import os
  import sys
  import re
  import io
  import codecs
  import shutil
  import tempfile
  from contextlib import contextmanager
label_desc: Use image node_id 2 for calling the OrderedSet obj's underlying member method code with example usage: obj.__iter__() and returns: iter