code: def get_dev_folder(path=sys.prefix):
      
      if not path or len(path) <= 4:
          return None
      dirpath, basename = os.path.split(path)
      if basename in DEV_FOLDERS:
          return path
      return get_dev_folder(dirpath)
docs: :param str path: Path to examine
      :return str|None: Path to development build folder, such as .venv, .tox etc, if any