def _eval_coeff(self, pt):
        return sum(a.coeff(pt) for a in self.args)
printf [<format>] <args>....
dataset/ETHPy150Open sympy/sympy/sympy/series/sequences.py/SeqAdd._eval_coeff--crossover with--dataset/ETHPy150Open kdart/pycopia/fepy/pycopia/fepy/CLI.py/BaseCommands.printf