code: def test_iterator_repeat_not_even(self):
      dataset = [1, 2, 3, 4, 5]
      it = iterators.MultithreadIterator(dataset, 2, **self.options)
  
      batches = sum([it.next() for _ in range(5)], [])
      self.assertEqual(sorted(batches), sorted(dataset * 2))
  
imports: from __future__ import division
  import copy
  import unittest
  import numpy
  import six
  from chainer import iterators
  from chainer import serializers
  from chainer import testing
label_desc: Use image node_id 6 for calling the TestMultithreadIterator obj's underlying member method code with example usage: obj.test_iterator_repeat_not_even() without return types