Method copy

tools/python-3.11.9-amd64/Lib/weakref.py:430–437

(self)

        self.data[ref(key, self._remove)] = value

    def copy(self):
        new = WeakKeyDictionary()
        with _IterationGuard(self):
            for key, value in self.data.items():
                o = key()
                if o is not None:
                    new[o] = value
        return new

    __copy__ = copy