code: def parse_args():
      parser = argparse.ArgumentParser()
      group = parser.add_mutually_exclusive_group()
      group.add_argument(
          "--single-node",
          action="store_true",
          help="Run single-node read_images benchmark.",
      )
      group.add_argument(
          "--multi-node",
          action="store_true",
          help="Run multi-node read_images benchmark.",
      )
      return parser.parse_args()
  
file_path: ray/release/nightly_tests/dataset/read_images_benchmark.py
imports: import argparse
  import os
  import random
  import shutil
  import tempfile
  from typing import List, Tuple
  from PIL import Image
  import ray
  from benchmark import Benchmark
label_desc: Use image node_id 1 for calling a global function with example usage: parse_args() and returns: parser