def wang(): total = [] while True: unit= input("请输入(q退出)") if unit== 'q': break else: try: unit=int(unit) except: print("重新输入一个数字") else: total.append(unit) print("*"*90) return total def sum(money): count=0 for i in money: count=count+i return count price=wang() pay=sum(price) print("您一共花了"+str(pay)+"元,扫码还是现金?")