如何在discord.py中捕获错误并发送响应？

import discord

client = discord.Client()

@client.event
async def on_message(message):
    if message.content.startswith('!hello'):
        try:
            # 执行可能会出错的代码
            await message.channel.send('Hello!')
        except Exception as e:
            # 处理错误并发送响应
            await message.channel.send(f'An error occurred: {str(e)}')

client.run('YOUR_BOT_TOKEN')