code: def __str__(self):
      return f"{self.model} with batch size {self.batch_size}"
  
imports: import argparse
  import itertools
  import json
  import os
  import shlex
  import subprocess
  import sys
  import time
  import numpy
  import torch
  import torch.distributed
  import torch.nn
  import torch.optim
  import torchvision
label_desc: Use image node_id 2 for calling the TorchvisionBenchmark obj's underlying member method code with example usage: obj.__str__() and returns: self, str, self