code: def _num_available_cuda_gpus():
      return len(_CUDA_GPUS)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import urllib
  import re
  import itertools
  import uuid
  import datetime
  import sys
  from ._sframe_generation import generate_random_sframe
  from ._sframe_generation import generate_random_regression_sframe
  from ._sframe_generation import generate_random_classification_sframe
  from ._type_checks import _raise_error_if_not_of_type
  from ._type_checks import _is_non_string_iterable
  from ._progress_table_printer import ProgressTablePrinter
label_desc: Use image node_id 19 for calling a global function with example usage: _num_available_cuda_gpus() and returns: len