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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 solve(self):
 """Run the ACE calculational loop."""

        self._initialize()
        while self._outer_error_is_decreasing() and self._outer_iters < MAX_OUTERS:
            print('* Starting outer iteration {0:03d}. Current err = {1:12.5E}'
                  ''.format(self._outer_iters, self._last_outer_error))
            self._iterate_to_update_x_transforms()
            self._update_y_transform()
            self._outer_iters += 1