def coeff_mul(self, coeff):
        coeff = sympify(coeff)
        per = [x * coeff for x in self.periodical]
        return SeqPer(per, self.args[1])
Register all service chain node drivers.
dataset/ETHPy150Open sympy/sympy/sympy/series/sequences.py/SeqPer.coeff_mul--crossover with--dataset/ETHPy150Open openstack/group-based-policy/gbpservice/neutron/services/servicechain/plugins/ncp/node_driver_manager.py/NodeDriverManager._register_drivers