code: def add_subparser(self, name, parser):
      # pylint: disable=protected-access
      description = """Evaluate the specified model + dataset"""
      subparser = parser.add_parser(
          name,
          description=description,
          help="Evaluate the specified model + dataset",
      )
  
      subparser.add_argument(
          "archive_file",
          type=unicode,
          help="path to an archived trained model",
      )
  
      subparser.add_argument(
          "input_file",
          type=unicode,
          help="path to the file containing the evaluation data",
      )
  
      subparser.add_argument(
          "--output-file", type=unicode, help="path to output file"
      )
  
      subparser.add_argument(
          "--weights-file",
          type=unicode,
          help="a path that overrides which weights file to use",
      )
  
      cuda_device = subparser.add_mutually_exclusive_group(
          required=False
      )
      cuda_device.add_argument(
          "--cuda-device",
          type=int,
          default=-1,
          help="id of GPU to use (if any)",
      )
  
      subparser.add_argument(
          "-o",
          "--overrides",
          type=unicode,
          default="",
          help="a JSON structure used to override the experiment configuration",
      )
  
      subparser.set_defaults(func=evaluate_from_args)
  
      return subparser
  
imports: from __future__ import with_statement
  from __future__ import absolute_import
  import argparse
  import logging
  import json
  import torch
  from allennlp.commands.subcommand import Subcommand
  from allennlp.common.checks import check_for_gpu
  from allennlp.common.util import prepare_environment
  from allennlp.common.tqdm import Tqdm
  from allennlp.data import Instance
  from allennlp.data.dataset_readers.dataset_reader import DatasetReader
  from allennlp.data.iterators import DataIterator
  from allennlp.models.archival import load_archive
  from allennlp.models.model import Model
  from io import open
label_desc: Use image node_id 1 for calling the Evaluate obj's underlying member method code with example usage: obj.add_subparser(name, parser) and returns: subparser