code: def test_sequence_repeat(self):
      self.assertRaises(OverflowError, lambda: "a" * self.pos)
      self.assertRaises(OverflowError, lambda: "a" * self.neg)
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 4 for calling the OverflowTestCase obj's underlying member method code with example usage: obj.test_sequence_repeat() without return types