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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 _compute_sorted_indices(self):
 """ The smoothers need sorted data. This sorts it from the perspective of each column. if self._x[0][3] is the 9th-smallest value in self._x[0], then _xi_sorted[3] = 8 We only have to sort the data once. """

        sorted_indices = []
        for to_sort in [self.y] + self.x:
            data_w_indices = [(val, i) for (i, val) in enumerate(to_sort)]
            data_w_indices.sort()
            sorted_indices.append([i for val, i in data_w_indices])
        # save in meaningful variable names
        self._yi_sorted = sorted_indices[0]  # list (like self.y)
        self._xi_sorted = sorted_indices[1:]