code: def use_gpu(opt):
      """
      Creates a boolean if gpu used
      """
      return (hasattr(opt, "gpu_ranks") and len(opt.gpu_ranks) > 0) or (
          hasattr(opt, "gpu") and opt.gpu > -1
      )
  
imports: import torch
  import random
  from contextlib import contextmanager
  import inspect
  import numpy
  import os
  from copy import deepcopy
label_desc: Use image node_id 4 for calling a global function with example usage: use_gpu(opt) and returns: unknown