Method _copy

xarray/core/indexes.py:474–482

(self, deep: bool = True, memo: dict[int, Any] | None = None)

        return self._copy(deep=True, memo=memo)

    def _copy(self, deep: bool = True, memo: dict[int, Any] | None = None) -> Self:
        cls = self.__class__
        copied = cls.__new__(cls)
        if deep:
            for k, v in self.__dict__.items():
                setattr(copied, k, copy.deepcopy(v, memo))
        else:
            copied.__dict__.update(self.__dict__)
        return copied

    def __getitem__(self, indexer: Any) -> Self:
        raise NotImplementedError()