Method rename

xarray/core/indexes.py:418–447

Maybe update the index with new coordinate and dimension names. This method should be re-implemented in subclasses of Index if it has attributes that depend on coordinate or dimension names. By default (if not re-implemented), it returns the index itself. Warning:

(
        self,
        name_dict: Mapping[Any, Hashable],
        dims_dict: Mapping[Any, Hashable],
    )

        return None

    def rename(
        self,
        name_dict: Mapping[Any, Hashable],
        dims_dict: Mapping[Any, Hashable],
    ) -> Self:
        """Maybe update the index with new coordinate and dimension names.

        This method should be re-implemented in subclasses of Index if it has
        attributes that depend on coordinate or dimension names.

        By default (if not re-implemented), it returns the index itself.

        Warning: the input names are not filtered for this method, they may
        correspond to any variable or dimension of a Dataset or a DataArray.

        Parameters
        ----------
        name_dict : dict-like
            Mapping of current variable or coordinate names to the desired names,
            as passed from :py:meth:`Dataset.rename_vars`.
        dims_dict : dict-like
            Mapping of current dimension names to the desired names, as passed
            from :py:meth:`Dataset.rename_dims`.

        Returns
        -------
        renamed : Index
            Index with renamed attributes.
        """
        return self

    def copy(self, deep: bool = True) -> Self:
        """Return a (deep) copy of this index.