code: def ensure_dir_exists(path, mode=0o777):
      """ensure that a directory exists
  
      If it doesn't exist, try to create it, protecting against a race condition
      if another process is doing the same.
  
      The default permissions are determined by the current umask.
      """
      try:
          os.makedirs(path, mode=mode)
      except OSError as e:
          if e.errno != errno.EEXIST:
              raise
      if not os.path.isdir(path):
          raise IOError("%r exists but is not a directory" % path)
  
label_desc: Use image node_id 1 for calling a global function with example usage: ensure_dir_exists(path, mode) without return types