def coeff_mul(self, coeff):
        coeff = sympify(coeff)
        per = [x * coeff for x in self.periodical]
        return SeqPer(per, self.args[1])
See docstring of SeqBase.coeff_mul
dataset/ETHPy150Open sympy/sympy/sympy/series/sequences.py/SeqPer.coeff_mul