code: def __init__(self, *args, **kwargs):
      super(TestData, self).__init__(*args, **kwargs)
      self.opt = default_opts
  
file_path: OpenNMT-py/onmt/tests/test_data_prepare.py
imports: import copy
  import unittest
  import glob
  import os
  from onmt.utils.parse import ArgumentParser
  from onmt.opts import data_prepare_opts
  from onmt.train_single import prepare_transforms_vocabs
  from onmt.constants import CorpusName
label_desc: Use image node_id 1 to create a new TestData object from inherited base classes: unittest with example: obj = TestData()