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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_slice_axis(self, slice_obj, axis=None):
 """ this is pretty simple as we just have to deal with labels """

        if axis is None:
            axis = self.axis or 0

        obj = self.obj
        if not need_slice(slice_obj):
            return obj.copy(deep=False)

        labels = obj._get_axis(axis)
        indexer = labels.slice_indexer(slice_obj.start, slice_obj.stop,
                                       slice_obj.step, kind=self.name)

        if isinstance(indexer, slice):
            return self._slice(indexer, axis=axis, kind='iloc')
        else:
            return self.obj._take(indexer, axis=axis)