code: def load(filename):
      with open(filename, "rb") as f:
          return pickle.load(f)
  
imports: from tqdm import tqdm
  from typing import Tuple
  from random import shuffle
  import pickle
  import random
  import numpy
  from pathlib import Path
  from pytorch_pretrained_bert.tokenization import BertTokenizer
label_desc: Use image node_id 6 for calling the PretrainingDataCreator obj's underlying member method code with example usage: obj.load(filename) and returns: pickle