code: def pop(self):
      if self._pending_removals:
          self._commit_removals()
      while True:
          try:
              itemref = self.data.pop()
          except KeyError:
              raise KeyError("pop from empty WeakSet") from None
          item = itemref()
          if item is not None:
              return item
  
imports: from _weakref import ref
  from types import GenericAlias
label_desc: Use image node_id 10 for calling the WeakSet obj's underlying member method code with example usage: obj.pop() and returns: item