discord.py部分命令无法执行，新增命令后代码失效求助

核心问题：重复定义on_message事件 #

你在代码里多次用@client.event装饰on_message函数，Discord.py只会保留最后一个定义的on_message事件，前面的都会被覆盖。这就是为什么只有random_meme!相关逻辑可能触发，而last!、🤓后缀消息的处理完全失效，连client.process_commands也没机会执行。

其他代码错误 #

• on_message_delete里的错误：

  • await message.channel.send(channel, embed=embed)：send方法无需传入channel参数，改成await message.channel.send(embed=embed)
  • await channel.message.send("test")：正确写法是await channel.send("test")，不存在channel.message.send这种调用方式

• on_member_unban事件的错误：

  • 事件函数不需要self参数，改为async def on_member_unban(guild: discord.Guild, user: discord.User)
  • response = ("The Following User Has Been Unbanned" + user)：不能直接将User对象与字符串拼接，改为response = f"The Following User Has Been Unbanned: {user.name} ({user.id})"
  • await client.process_commands(response)：process_commands需要传入Message对象，这里直接发送消息到指定频道即可，比如channel = client.get_channel(channelid); await channel.send(response)

• last!命令的错误：

  • await client.process_commands(deleted_messages[0])：process_commands需传入Message对象，此处应直接发送记录的删除消息，比如await message.channel.send(deleted_messages[-1])（取最后一条删除的消息用索引-1而非0）

修复后的完整代码示例 #

import time
import discord
import redditeasy
import requests
import os

# 请自行定义以下变量
# client = discord.Client(intents=...)
# channelid = 你的目标频道ID
# deleted_messages = []

@client.event
async def on_message_delete(message):
    if message.author == client.user:
        return
    
    t = time.localtime()
    current_time = time.strftime("%c", t)
    embed = discord.Embed(title=f"{message.author.name} deleted a message", description="", color=0xFF0000)
    embed.add_field(name="Deleted Message", value=message.content, inline=True)
    embed.set_footer(text=f"Sent at {current_time}")
    
    channel = client.get_channel(channelid)
    if len(deleted_messages) == 6:
        del deleted_messages[0]
    
    final_deleted = f"{message.author.name}: |{message.content}| Sent at |{current_time}|"
    deleted_messages.append(final_deleted)
    
    await message.channel.send(embed=embed)
    await channel.send("test")

@client.event
async def on_member_unban(guild: discord.Guild, user: discord.User):
    response = f"The Following User Has Been Unbanned: {user.name} ({user.id})"
    channel = client.get_channel(channelid)
    await channel.send(response)

@client.event
async def on_message(message):
    # 优先处理命令（若使用commands.Bot框架）
    await client.process_commands(message)
    
    if message.author == client.user:
        return
    
    # 处理带🤓后缀的消息
    if message.content.endswith("🤓"):
        await message.channel.send(f"Please shut the fuck up {message.author.name}.")
    
    # 处理last!命令
    elif message.content == "last!":
        if deleted_messages:
            await message.channel.send(deleted_messages[-1])
        else:
            await message.channel.send("No deleted messages recorded yet.")
    
    # 处理random_meme!命令
    elif message.content == "random_meme!":
        post = redditeasy.Subreddit(
            client_id="你的client_id",
            client_secret="你的client_secret",
            user_agent="你的user_agent"
        )
        try:
            postoutput = post.get_post(subreddit="dankmemes")
            with open('meme.jpg','wb') as f:
                response = requests.get(postoutput.content)
                f.write(response.content)
            
            channel = client.get_channel(channelid)
            await channel.send(file=discord.File('meme.jpg'))
            os.remove("meme.jpg")
        except Exception as e:
            await message.channel.send(f"Failed to get meme: {str(e)}")

# 启动机器人
client.run("你的机器人令牌")

额外注意事项 #

• 确保机器人已开启对应Intents（如消息内容意图、成员意图），否则无法接收消息、删除事件等
• 若使用commands.Bot框架，建议用@commands.command()装饰器定义命令，而非在on_message里判断内容，更规范且不易冲突
• 处理文件时优先用with open语句，避免文件未正常关闭的问题
• 网络请求（如获取Reddit帖子）需添加异常处理，防止机器人崩溃

内容的提问来源于stack exchange，提问作者PugsHello