code: def _get_gpus():
      return range(mx.util.get_gpu_count())
  
imports: from __future__ import print_function
  from six.moves import range
  import argparse
  import subprocess
  from itertools import product
  from time import time
  import mxnet
  import numpy
  from mxnet import gluon, np, npx
label_desc: Use image node_id 3 for calling a global function with example usage: _get_gpus() and returns: range