Discord.py在私密消息中指定服务器上的角色

import discord
from discord.ext import commands

intents = discord.Intents.default()
intents.members = True  # 确保启用了成员意图

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

@bot.event
async def on_ready():
    print(f'Bot is ready and connected to {len(bot.guilds)} servers!')

@bot.command()
async def assign_role(ctx, role_name: str):
    guild = ctx.guild
    role = discord.utils.get(guild.roles, name=role_name)
    
    if role is None:
        await ctx.send(f'Role "{role_name}" not found.')
        return
    
    if ctx.channel.type == discord.ChannelType.private:
        # 如果是在私密消息中调用命令
        user = ctx.author
        await user.add_roles(role)
        await ctx.send(f'You have been assigned the role: {role.name}')
    else:
        await ctx.send('This command can only be used in private messages.')

bot.run('YOUR_BOT_TOKEN')