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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_surface_boundaries(self):
 """ Returns the boundaries in the same format as a multiplanar surface, with two one-element lists of lons and lats """

        mesh = self.mesh
        lons = numpy.concatenate((mesh.lons[0, :],
                                  mesh.lons[1:, -1],
                                  mesh.lons[-1, :-1][::-1],
                                  mesh.lons[:-1, 0][::-1]))
        lats = numpy.concatenate((mesh.lats[0, :],
                                  mesh.lats[1:, -1],
                                  mesh.lats[-1, :-1][::-1],
                                  mesh.lats[:-1, 0][::-1]))
        return [lons], [lats]