code: def load_pkl(file):
      """Loads a pkl file.
  
      For an example, see `save_pkl`.
  
      Arguments
      ---------
      file : str
          Path to the input pkl file.
  
      Returns
      -------
      The loaded object.
      """
  
      # Deals with the situation where two processes are trying
      # to access the same label dictionary by creating a lock
      count = 100
      while count > 0:
          if os.path.isfile(file + ".lock"):
              time.sleep(1)
              count -= 1
          else:
              break
  
      try:
          open(file + ".lock", "w").close()
          with open(file, "rb") as f:
              return pickle.load(f)
      finally:
          if os.path.isfile(file + ".lock"):
              os.remove(file + ".lock")
  
imports: import os
  import torch
  import logging
  import numpy
  import pickle
  import hashlib
  import csv
  import time
  import torchaudio
  import json
  import re
  from speechbrain.utils.torch_audio_backend import check_torchaudio_backend
label_desc: Use image node_id 21 for calling a global function with example usage: load_pkl(file) and returns: pickle