def test_equals_2(self):
     self.assertEqual(my_parse_int('  1 '), 1)
 def test_equals_4(self):
     self.assertEqual(my_parse_int('5 friends'), 'NaN')
 def test_equals_5(self):
     self.assertEqual(my_parse_int('16.5'), 'NaN')
 def test_equals_3(self):
     self.assertEqual(my_parse_int('08'), 8)