code: def main(args):
      """Main function which runs worker."""
      title = "## Starting evaluation of round {0} ##".format(
          args.round_name
      )
      logging.info(
          "\n"
          + "#" * len(title)
          + "\n"
          + "#" * len(title)
          + "\n"
          + "##"
          + " " * (len(title) - 2)
          + "##"
          + "\n"
          + title
          + "\n"
          + "#" * len(title)
          + "\n"
          + "#" * len(title)
          + "\n"
          + "##"
          + " " * (len(title) - 2)
          + "##"
          + "\n"
      )
      if args.blacklisted_submissions:
          logging.warning(
              "BLACKLISTED SUBMISSIONS: %s",
              args.blacklisted_submissions,
          )
      random.seed()
      logging.info("Running nvidia-docker to ensure that GPU works")
      shell_call(
          [
              "docker",
              "run",
              "--runtime=nvidia",
              "--rm",
              "nvidia/cuda",
              "nvidia-smi",
          ]
      )
      eval_worker = EvaluationWorker(
          worker_id=args.worker_id,
          storage_client=eval_lib.CompetitionStorageClient(
              args.project_id, args.storage_bucket
          ),
          datastore_client=eval_lib.CompetitionDatastoreClient(
              args.project_id, args.round_name
          ),
          storage_bucket=args.storage_bucket,
          round_name=args.round_name,
          dataset_name=args.dataset_name,
          blacklisted_submissions=args.blacklisted_submissions,
          num_defense_shards=args.num_defense_shards,
      )
      eval_worker.run_work()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from builtins import int
  import argparse
  import json
  import logging
  import os
  import random
  import shutil
  import subprocess
  import time
  import uuid
  from six import iteritems
  import eval_lib
  from cleverhans.utils import shell_call
label_desc: Use image node_id 6 for calling a global function with example usage: main(args) without return types