code: def copy(self):
      new = WeakIdKeyDictionary()
      with _IterationGuard(self):
          for key, value in self.data.items():
              o = key()
              if o is not None:
                  new[o] = value
      return new
  
imports: from __future__ import annotations
  import weakref
  from weakref import ref
  from _weakrefset import _IterationGuard
  from collections.abc import MutableMapping, Mapping
  from torch import Tensor
  import collections.abc
label_desc: Use image node_id 9 for calling the WeakIdKeyDictionary obj's underlying member method code with example usage: obj.copy() and returns: new