code: def __len__(self):
      return len(self.data_dict["words"])
  
file_path: DeepKE/src/deepke/name_entity_re/multimodal/modules/dataset.py
imports: import torch
  import os
  from PIL import Image
  from torch.utils.data import Dataset
  from transformers import BertTokenizer, CLIPProcessor
  import logging
label_desc: Use image node_id 2 for calling the MMPNERDataset obj's underlying member method code with example usage: obj.__len__() and returns: len