class_docstr: Set the remembers the order elements were added
class_docstr_tok: ["Set","the","remembers","the","order","elements","were","added"]
code: def __iter__(self):
      # Traverse the linked list in order.
      root = self.__root
      curr = root.next()
      while curr is not root:
          yield curr.key
          curr = curr.next()
  
imports: from __future__ import absolute_import, print_function, division
  import types
  import weakref
  from six import string_types
label_desc: Use image node_id 11 for calling the OrderedSet obj's underlying member method code with example usage: obj.__iter__() without return types