discord.py输出计算结果

import discord

client = discord.Client()

@client.event
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!calculate'):
        expression = message.content[11:]  # 提取计算表达式
        try:
            result = eval(expression)  # 计算表达式
            await message.channel.send(f"计算结果为: {result}")
        except Exception as e:
            await message.channel.send(f"计算错误: {str(e)}")

client.run('YOUR_DISCORD_BOT_TOKEN')