Method copy

Lib/weakref.py:141–147

(self)

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

    def copy(self):
        new = WeakValueDictionary()
        for key, wr in self.data.copy().items():
            o = wr()
            if o is not None:
                new[key] = o
        return new

    __copy__ = copy