code: def test_init(self):
      s = WeakSet()
      s.__init__(self.items)
      self.assertEqual(s, self.s)
      s.__init__(self.items2)
      self.assertEqual(s, WeakSet(self.items2))
      self.assertRaises(TypeError, s.__init__, s, 2)
      self.assertRaises(TypeError, s.__init__, 1)
  
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 20 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_init() without return types