Method set_axis

pandas/core/generic.py:680–725

Assign desired index to given axis. Indexes for%(extended_summary_sub)s row labels can be changed by assigning a list-like or Index. Parameters ---------- labels : list-like, Index The values for the new index. axis : %(axes_sin

(
        self,
        labels,
        *,
        axis: Axis = 0,
        copy: bool | lib.NoDefault = lib.no_default,
    )

        return int(np.prod(self.shape))

    def set_axis(
        self,
        labels,
        *,
        axis: Axis = 0,
        copy: bool | lib.NoDefault = lib.no_default,
    ) -> Self:
        """
        Assign desired index to given axis.

        Indexes for%(extended_summary_sub)s row labels can be changed by assigning
        a list-like or Index.

        Parameters
        ----------
        labels : list-like, Index
            The values for the new index.

        axis : %(axes_single_arg)s, default 0
            The axis to update. The value 0 identifies the rows. For `Series`
            this parameter is unused and defaults to 0.

        copy : bool, default False
            This keyword is now ignored; changing its value will have no
            impact on the method.

            .. deprecated:: 3.0.0

                This keyword is ignored and will be removed in pandas 4.0. Since
                pandas 3.0, this method always returns a new object using a lazy
                copy mechanism that defers copies until necessary
                (Copy-on-Write). See the `user guide on Copy-on-Write
                <https://pandas.pydata.org/docs/dev/user_guide/copy_on_write.html>`__
                for more details.

        Returns
        -------
        %(klass)s
            An object of type %(klass)s.

        See Also
        --------
        %(klass)s.rename_axis : Alter the name of the index%(see_also_sub)s.
        """
        self._check_copy_deprecation(copy)
        return self._set_axis_nocheck(labels, axis, inplace=False)

    @overload
    def _set_axis_nocheck(