code: def nb_stderr():
      content = """
  import sys
  
  # + tags=["str"]
  print('this should not appear', file=sys.stderr)
  print('something')
  """
      return save_notebook(content, "nb.ipynb")
  
file_path: sklearn-evaluation/tests/nb/conftest.py
imports: from pathlib import Path
  import jupytext
  import nbformat
  import papermill
  import pytest
label_desc: Use image node_id 12 for calling a global function with example usage: nb_stderr() and returns: save_notebook