content: import io
  import pickle
  
  
  # pickle
  pick = pickle.dumps({'a': 'b', 'c': 'd'})
  print(pickle.loads(pick))
  
  file_obj = io.BytesIO()
  pickle.dump([1, 2, '3'], file_obj)
  file_obj.seek(0)
  print(pickle.load(file_obj))
  
  file_obj.seek(0)
  print(pickle.Unpickler(file_obj).load())
  