code: def test_error(self):
      self.o.ind = "dumb"
      self.n.ind = "bad"
      self.assertRaises(TypeError, operator.index, self.o)
      self.assertRaises(TypeError, operator.index, self.n)
      self.assertRaises(TypeError, slice(self.o).indices, 0)
      self.assertRaises(TypeError, slice(self.n).indices, 0)
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 6 for calling the BaseTestCase obj's underlying member method code with example usage: obj.test_error() without return types