code: def test_deepcopy_on_nested_readonly_list_can_be_mutated():
      lst = [1, [2, [3, [4]]]]
      lst = make_read_only(lst)
      copied_l = deepcopy(lst)
      copied_l[1][1].append(5)
      assert lst[1][1] != copied_l[1][1]
  
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 21 for calling a global function with example usage: test_deepcopy_on_nested_readonly_list_can_be_mutated() without return types