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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 energy(self):
 """Compute the energy of the system"""

        result = 0.0
        for index1 in range(self.numc):
            for index2 in range(index1):
                if self.scaling[index1, index2] > 0:
                    for se, ve in self.yield_pair_energies(index1, index2):
                        result += se*ve*self.scaling[index1, index2]
        return result