code: def _gib_string(num_bytes: float) -> str:
      return f"{float(num_bytes / 1024 ** 3):.2f}GiB"
  
imports: import fnmatch
  import io
  import os
  import shutil
  import tarfile
  from typing import Optional, Tuple, Dict, Generator, Union, List
  import ray
  from ray.util.annotations import DeveloperAPI
  from ray.air._internal.filelock import TempFileLock
  from ray.air.util.node import _get_node_id_from_node_ip, _force_on_node
label_desc: Use image node_id 6 for calling a global function with example usage: _gib_string(num_bytes) and returns: float, str