code: def __iter__(self):
      for i in range(self.__len__()):
          yield self.__getitem__(i)
  
imports: import random
  import numpy
  import os
  from collections import Counter
  import logging
  import torch
  import stanza.models.common.seq2seq_constant
  from stanza.models.common.data import map_to_ids, get_long_tensor, get_float_tensor, sort_all
  from stanza.models.lemma.vocab import Vocab, MultiVocab
  from stanza.models.lemma import edit
  from stanza.models.common.doc import *
label_desc: Use image node_id 6 for calling the DataLoader obj's underlying member method code with example usage: obj.__iter__() without return types