class_docstr: Basic tests on the built-in parlai Dictionary.
class_docstr_tok: ["Basic","tests","on","the","built-in","parlai","Dictionary","."]
docstr: Split tokenize specially handles some limited punctuation.
code: def test_split_tokenize(self):
      """
      Split tokenize specially handles some limited punctuation.
      """
      self.assertEqual(
          DictionaryAgent.split_tokenize("   this is a test!   "),
          ["this", "is", "a", "test", "!"],
      )
  
imports: from parlai.core.build_data import modelzoo_path
  from parlai.core.dict import find_ngrams
  from parlai.core.params import ParlaiParser
  from parlai.core.dict import DictionaryAgent, TokenizationMode
  from parlai.core.opt import Opt
  import parlai.scripts.build_dict
  from parlai.utils.io import PathManager
  import parlai.utils.testing
  import os
  import shutil
  import unittest
  import pytest
label_desc: Use image node_id 3 for calling the TestDictionary obj's underlying member method code with example usage: obj.test_split_tokenize() without return types