code: def __len__(self):
      return len(self.loader)
  
imports: import json
  import logging
  import os
  import random
  from collections import namedtuple
  import numpy
  import torch
  import torch.distributed
  import torch.nn
  from genotypes import Genotype
  from ops import PRIMITIVES
  from nni.algorithms.nas.pytorch.cdarts.utils import *
label_desc: Use image node_id 3 for calling the CyclicIterator obj's underlying member method code with example usage: obj.__len__() and returns: len