code: def from_cuda(x: "torch.Tensor") -> "torch.Tensor":
      """
      Move the tensor from the GPU to the CPU if a GPU is available.
  
      :param x: GPU Tensor to move to CPU if available.
      :return: The GPU Tensor moved to a CPU Tensor.
      """
      from torch.cuda import is_available
  
      use_cuda = is_available()
      if use_cuda:  # pragma: no cover
          x = x.cpu()
      return x
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import logging
  import math
  import os
  import shutil
  import sys
  import tarfile
  import warnings
  import zipfile
  from functools import wraps
  from inspect import signature
  from typing import TYPE_CHECKING, Callable, List, Dict, Optional, Tuple, Union
  import numpy
  import six
  from scipy.special import gammainc
  from tqdm.auto import tqdm
  from art import config
label_desc: Use image node_id 46 for calling a global function with example usage: from_cuda(x) and returns: x