code: def test_error(self):
      self.o.ind = "dumb"
      self.n.ind = "bad"
      indexobj = lambda x, obj: obj.seq[x]
      self.assertRaises(TypeError, indexobj, self.o, self)
      self.assertRaises(TypeError, indexobj, self.n, self)
      sliceobj = lambda x, obj: obj.seq[x:]
      self.assertRaises(TypeError, sliceobj, self.o, self)
      self.assertRaises(TypeError, sliceobj, self.n, self)
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 8 for calling the SeqTestCase obj's underlying member method code with example usage: obj.test_error() without return types