code: def test_blacklist_paths(tmpdir, dir_obs, sample_run):
      basedir, obs = dir_obs
      obs.started_event(**sample_run)
      other_file = Path(str(tmpdir / "dodo.txt"))
      other_file.touch()
      with pytest.raises(FileExistsError):
          obs.save_file(str(other_file), "cout.txt")
  
imports: import datetime
  import os
  from copy import copy
  import pytest
  import json
  from pathlib import Path
  from sacred.observers.file_storage import FileStorageObserver
  from sacred.metrics_logger import ScalarMetricLogEntry, linearize_metrics
label_desc: Use image node_id 22 for calling a global function with example usage: test_blacklist_paths(tmpdir, dir_obs, sample_run) without return types