Telegram转Discord机器人报错：'Updater'对象无'dispatcher'属性

我正在开发一款同步指定用户消息的Telegram转Discord机器人，但运行时总是触发错误：AttributeError: 'Updater' object has no attribute 'dispatcher'。这是我第一次开发这类机器人，找不到dispatcher的替代方案，当前代码如下：

import telegram
from telegram.ext import *
from discord.ext import commands
import discord
import asyncio

telegram_token = ""
discord_token = ""

# Discord Channel ID
discord_channel_id = "112865"

telegram_bot = telegram.Bot(token=telegram_token)

intents = discord.Intents.default()
discord_bot = discord.Client(intents=intents)

def telegram_message_handler(update, context):
    message = update.effective_message
    text = message.text
    username = message.from_user.username
    # Send the message to Discord
    discord_message = f"[@{username}]: {text}"
    discord_channel = discord_bot.get_channel(int(discord_channel_id))
    asyncio.run_coroutine_threadsafe(discord_channel.send(discord_message), discord_bot.loop)

updater = Updater(telegram_token, update_queue=None)
dispatcher = updater.dispatcher
message_handler = MessageHandler(filters.text & ~filters.command, telegram_message_handler)
dispatcher.add_handler(message_handler)

@discord_bot.event
async def on_ready():
    print(f"Connected to Discord as {discord_bot.user.name}")

@discord_bot.event
async def on_message(message):
    if message.author == discord_bot.user:
        return
    # Send the message to Telegram
    telegram_chat_id = "dav52"
    await telegram_bot.send_message(chat_id=telegram_chat_id, text=message.content)

# Start the Telegram bot
updater.start_polling()

# Start the Discord bot
discord_bot.run(discord_token)

问题原因及解决方案 #

这个错误源于你使用的是python-telegram-bot v20+版本，该版本彻底废弃了旧的Updater和dispatcher架构，改用基于Application的异步API。以下是适配新版本的完整代码：

import asyncio
from telegram import Update
from telegram.ext import ApplicationBuilder, MessageHandler, filters, ContextTypes
import discord

telegram_token = ""
discord_token = ""

# Discord Channel ID
discord_channel_id = 112865  # 直接用整数类型
# Telegram目标聊天ID
telegram_chat_id = "dav52"

# 初始化Discord客户端
intents = discord.Intents.default()
intents.message_content = True  # 必须开启此权限才能读取消息内容
discord_bot = discord.Client(intents=intents)

# Telegram消息处理异步函数
async def telegram_message_handler(update: Update, context: ContextTypes.DEFAULT_TYPE):
    message = update.effective_message
    if not message.text:
        return
    username = update.effective_user.username
    discord_message = f"[@{username}]: {message.text}"
    
    # 获取Discord频道并发送消息
    discord_channel = discord_bot.get_channel(discord_channel_id)
    if discord_channel:
        await discord_channel.send(discord_message)

# Discord消息处理事件
@discord_bot.event
async def on_ready():
    print(f"Connected to Discord as {discord_bot.user.name}")

@discord_bot.event
async def on_message(message):
    if message.author == discord_bot.user:
        return
    # 发送消息到Telegram
    try:
        # 复用Telegram应用的bot实例发送消息
        telegram_bot = context.bot if 'context' in locals() else await ApplicationBuilder().token(telegram_token).build().bot
        await telegram_bot.send_message(chat_id=telegram_chat_id, text=message.content)
    except Exception as e:
        print(f"发送Telegram消息失败: {e}")

async def main():
    # 初始化Telegram应用
    telegram_app = ApplicationBuilder().token(telegram_token).build()
    # 添加消息处理器
    telegram_app.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, telegram_message_handler))
    
    # 同时运行Telegram和Discord bot，避免阻塞
    await asyncio.gather(
        telegram_app.run_polling(),
        discord_bot.start(discord_token)
    )

if __name__ == "__main__":
    asyncio.run(main())

关键修改说明 #

• 替换Updater为ApplicationBuilder，构建Telegram应用实例
• 将Telegram消息处理器改为异步函数，适配v20+版本的API要求
• 开启Discord的message_content权限，否则无法读取用户消息内容
• 使用asyncio.gather同时启动两个bot，解决原代码中阻塞运行的问题
• 移除线程安全的异步调用，直接在异步上下文内处理跨平台消息发送

内容的提问来源于stack exchange，提问作者David Henson