code: def test_readonly_list():
      lst = [1, 2, 3, 4]
      lst = make_read_only(lst)
      _check_read_only_list(lst)
  
imports: import json
  import pickle
  import pytest
  from copy import copy, deepcopy
  from sacred.config.custom_containers import make_read_only, ReadOnlyList, ReadOnlyDict
  from sacred.utils import SacredError
label_desc: Use image node_id 7 for calling a global function with example usage: test_readonly_list() without return types