code: def __len__(self):
      return len(self.dict_object[self.order[0]])
  
imports: import os
  import io
  import numpy
  import torch
  import torch.utils.data
  from torch.utils.data.sampler import Sampler
  from torch.utils.data import Dataset
  from neuralcoref.train.utils import encode_distance, BATCH_SIZE_PATH, SIZE_FP, SIZE_FP_COMPRESSED, SIZE_FS, SIZE_FS_COMPRESSED, SIZE_GENRE, SIZE_PAIR_IN, SIZE_SINGLE_IN
  from neuralcoref.train.conllparser import FEATURES_NAMES
label_desc: Use image node_id 2 for calling the _DictionaryDataLoader obj's underlying member method code with example usage: obj.__len__() and returns: len