code: def test_copy_not_repeat(self):
      dataset = [1, 2, 3, 4, 5]
      it = iterators.MultithreadIterator(
          dataset, 2, repeat=False, **self.options
      )
      copy_it = copy.copy(it)
      batches = sum([it.next() for _ in range(3)], [])
      self.assertEqual(sorted(batches), dataset)
      for _ in range(2):
          self.assertRaises(StopIteration, it.next)
      it = None
  
      batches = sum([copy_it.next() for _ in range(3)], [])
      self.assertEqual(sorted(batches), dataset)
      for _ in range(2):
          self.assertRaises(StopIteration, copy_it.next)
  
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 11 for calling the TestMultithreadIterator obj's underlying member method code with example usage: obj.test_copy_not_repeat() without return types