code: def nb_no_output():
      content = """
  import pandas as pd
  
  # + tags=["a"]
  x = 1
  """
      save_notebook(content, "nb_no_output.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 6 for calling a global function with example usage: nb_no_output() without return types