code: def test_setdelitem(self):
      self.o.ind = -2
      self.n.ind = 2
      lst = list("ab!cdefghi!j")
      del lst[self.o]
      del lst[self.n]
      lst[self.o] = "X"
      lst[self.n] = "Y"
      self.assertEqual(lst, list("abYdefghXj"))
  
      lst = [5, 6, 7, 8, 9, 10, 11]
      lst.__setitem__(self.n, "here")
      self.assertEqual(lst, [5, 6, "here", 8, 9, 10, 11])
      lst.__delitem__(self.n)
      self.assertEqual(lst, [5, 6, 8, 9, 10, 11])
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 1 for calling the ListTestCase obj's underlying member method code with example usage: obj.test_setdelitem() without return types