code: def test_weak_destroy_while_iterating(self):
      # Issue #7105: iterators shouldn't crash when a key is implicitly removed
      # Create new items to be sure no-one else holds a reference
      items = [ustr(c) for c in ("a", "b", "c")]
      s = WeakSet(items)
      it = iter(s)
      next(it)  # Trigger internal iteration
      # Destroy an item
      del items[-1]
      gc.collect()  # just in case
      # We have removed either the first consumed items, or another one
      self.assertIn(len(list(it)), [len(items), len(items) - 1])
      del it
      # The removal has been committed
      self.assertEqual(len(s), len(items))
  
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 41 for calling the TestWeakSet obj's underlying member method code with example usage: obj.test_weak_destroy_while_iterating() without return types