code: def nbconvert(notebook_path):
      if not os.path.exists(os.path.exists(notebook_path)):
          raise Exception("Invalid path %s" % notebook_path)
      CMD = (
          "python -m jupyter nbconvert --to=html --ExecutePreprocessor.timeout=600 "
          "--ExecutePreprocessor.kernel_name='python3' "
          "--ExecutePreprocessor.store_widget_state=True "
          "--execute '{}'"
      )
      cmd = CMD.format(notebook_path)
      status = subprocess.check_call(cmd, shell=True)
      return status == 0
  
label_desc: Use image node_id 1 for calling a global function with example usage: nbconvert(notebook_path) and returns: unknown