code: def is_gpu_present() -> bool:
      """Returns true if TPU devices are present."""
      return bool(tf_config.list_physical_devices("GPU"))
  
imports: import os
  from typing import List, Optional, Union
  from tensorflow.python.eager import context
  from tensorflow.python.framework import config
  from tensorflow.python.framework import device
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 13 for calling a global function with example usage: is_gpu_present() and returns: bool