code: def test_key_with_mutation(self):
      data = list(range(10))
  
      def k(x):
          del data[:]
          data[:] = range(20)
          return x
  
      self.assertRaises(ValueError, data.sort, key=k)
  
imports: from test import support
  import random
  import unittest
  from functools import cmp_to_key
label_desc: Use image node_id 5 for calling the TestDecorateSortUndecorate obj's underlying member method code with example usage: obj.test_key_with_mutation() and returns: x