content: import sys
  import warnings
  from pathlib import Path
  
  from nbdev.processors import NBProcessor, _do_eval
  
  
  def check_nb(nb_path: str) -> None:
      with warnings.catch_warnings(record=True) as issued_warnings:
          NBProcessor(nb_path, _do_eval, process=True)
      if any(
          "Found cells containing imports and other code" in str(w)
          for w in issued_warnings
      ):
          print(f"{nb_path} has cells containing imports and code.")
          sys.exit(1)
  
  
  if __name__ == "__main__":
      repo_root = Path(__file__).parents[1]
      for nb_path in (repo_root / "nbs").glob("*.ipynb"):
          check_nb(str(nb_path))
  