Discord机器人添加角色报UnboundLocalError错误求助

错误原因 #

1. 变量未定义：只有当表情ID匹配时才会定义role和role2，如果表情不匹配，这两个变量就不存在，后续判断role is not None时直接触发未绑定变量错误。
2. 类型不匹配：payload.emoji.id是整数类型，你用字符串'1032324082110304288'做比较，会导致匹配失败，永远走不到定义变量的分支。

修复后的代码 #

async def on_raw_reaction_add(payload):
    if payload.channel_id == 1030905311231483904:
        guild = bot.get_guild(payload.guild_id)
        # 提前初始化角色变量为None，避免未定义问题
        role = None
        role2 = None

        # 表情ID用整数类型匹配
        if payload.emoji.id == 1032324082110304288:
            role = discord.utils.get(guild.roles, name='Temporary')
            role2 = discord.utils.get(guild.roles, name='Not-Verified')

        if role is not None and role2 is not None:
            msg = await bot.get_channel(payload.channel_id).fetch_message(payload.message_id)
            member = msg.author
            if member is not None:
                await member.add_roles(role)
                await member.remove_roles(role2)
                await member.send("You have been Verified! Enjoy 2883 discord server! Please select your alliance role and troop type!")
                print('done')
            else:
                print('member not found')
        else:
            print('role not found')
    else:
        pass

关键修改点 #

• 用bot.get_guild(payload.guild_id)替代discord.utils.find，更高效且代码更简洁。
• 提前初始化role和role2为None，确保无论表情是否匹配，变量都已定义。
• 将表情ID改为整数类型，和payload.emoji.id的类型保持一致，保证匹配逻辑正常。
• 增加role2 is not None的判断，避免移除角色时出现变量未定义的问题。
• 简化DM发送逻辑，直接用await member.send()替代创建DM通道的步骤。

内容的提问来源于stack exchange，提问作者AimedEye