code: def test_add_cell_to_script_with_cell_markers(
      no_jupytext_version_number,
      py='''# ---
  # jupyter:
  #   jupytext:
  #     formats: py:percent
  #     cell_markers: '"""'
  # ---
  ''',
  ):
      nb = reads(py, fmt="py:percent")
      nb.cells = [new_raw_cell("A raw cell")]
      py2 = writes(nb, fmt="py:percent")
      assert py2.endswith(
          '''# %% [raw]
  """
  A raw cell
  """
  '''
      )
  
imports: from nbformat.v4.nbbase import new_raw_cell
  from jupytext import reads, writes
  from jupytext.cli import jupytext
label_desc: Use image node_id 2 for calling a global function with example usage: test_add_cell_to_script_with_cell_markers(no_jupytext_version_number, py) without return types