code: def test_ne(self):
      self.assertTrue(self.s != set(self.items))
      s1 = WeakSet()
      s2 = WeakSet()
      self.assertFalse(s1 != s2)
  
imports: import unittest
  from weakref import WeakSet
  import copy
  import string
  from collections import UserString
  from collections.abc import Set, MutableSet
  import gc
  import contextlib
  from test import support
label_desc: Use image node_id 40 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_ne() without return types