# coding:utf-8 #JSRUN引擎2.0,支持多达30种语言在线运行,全仿真在线交互输入输出。 voted = {} def check_voter(name): if voted.get(name): print("投票失败!") else: voted[name] = True print("投票成功!") check_voter("tom") check_voter("milk") check_voter("milk")