我如何通过在discord.py的on_message中提到某人的名字来向某人发送DM消息

import discord
from discord.ext import commands

intents = discord.Intents.default()
intents.typing = False
intents.presences = False

bot = commands.Bot(command_prefix='!', intents=intents)

@bot.event
async def on_message(message):
    # 检查消息是否提及了某人
    if bot.user.mentioned_in(message):
        # 获取提及的用户列表
        mentions = message.mentions
        for mention in mentions:
            # 确保不是自己提及自己
            if mention != bot.user:
                # 发送DM消息
                await mention.send("您被提及了！这是一条来自机器人的私信。")

    await bot.process_commands(message)

@bot.event
async def on_ready():
    print(f'已连接到 Discord：{bot.user.name}')

bot.run('YOUR_BOT_TOKEN')