Discord 机器人开发#3在 Slash Command 中添加子命令（Subcommand）！

import discord
from discord.ext import commands
from discord import app_commands

class UserCommandGroup(app_commands.Group):
    def __init__(self):
        super().__init__(name="user", description="用户相关命令合集！")

    @app_commands.command(name="info", description="查看用户信息。")
    async def info(self, interaction: discord.Interaction, user: discord.User):
        await interaction.response.send_message(f"{user.name} 的 ID 是 {user.id}。")

    @app_commands.command(name="ban", description="封禁用户。")
    async def ban(self, interaction: discord.Interaction, user: discord.User, reason: str):
        await interaction.response.send_message(f"已以 '{reason}' 为由封禁了 {user.name}！")

intents = discord.Intents.default()
bot = commands.Bot(command_prefix="!", intents=intents)
bot.tree.add_command(UserCommandGroup())   # 命令组要在 sync() 之前先注册！

@bot.event
async def on_ready():
    await bot.tree.sync()
    print(f"✅ {bot.user} 机器人已准备就绪！")

bot.run("YOUR_TOKEN")