code: def test_fixed_value_not_initialized():
      d = DogmaticDict({"a": 7})
      assert "a" not in d
  
file_path: sacred/tests/test_config/test_dogmatic_dict.py
imports: import pytest
  from sacred.config.custom_containers import DogmaticDict
label_desc: Use image node_id 8 for calling a global function with example usage: test_fixed_value_not_initialized() without return types