code: def test_execute_readme_ok(tmpdir):
      tmp_md = str(tmpdir.join("notebook.md"))
  
      with open(tmp_md, "w") as fp:
          fp.write(
              """
  A readme with correct instructions
  
  ```python
  1 + 2
  ```
  """
          )
  
      jupytext(args=[tmp_md, "--execute"])
  
file_path: jupytext/tests/integration/cli/test_execute.py
imports: import shutil
  from io import StringIO
  from unittest import mock
  import pytest
  from jupytext import read, reads
  from jupytext.cli import jupytext
  from jupytext.version import __version__
label_desc: Use image node_id 4 for calling a global function with example usage: test_execute_readme_ok(tmpdir) without return types