code: def single_node_env(args):
    
    # setup ARGV for the TF process
    if isinstance(args, list):
        sys.argv = args
    elif args.argv:
        sys.argv = args.argv
  
    # setup ENV for Hadoop-compatibility and/or GPU allocation
    num_gpus = args.num_gpus if 'num_gpus' in args else 1
    util.single_node_env(num_gpus)
docs: Sets up environment for a single-node TF session.
  
    Args:
      :args: command line arguments as either argparse args or argv list