code: def test_itokenize(self):
      gen = self.tokenizer.itokenize(self.text)
      assert_equal(next(gen), "Beautiful is better than ugly.")
      assert_equal(next(gen), "Simple is better than complex.")
  
imports: import unittest
  from nose.plugins.attrib import attr
  from nose.tools import *
  from textblob.tokenizers import WordTokenizer, SentenceTokenizer, word_tokenize, sent_tokenize
  from textblob.compat import PY2
label_desc: Use image node_id 4 for calling the TestSentenceTokenizer obj's underlying member method code with example usage: obj.test_itokenize() without return types