Unresolved attribute reference 'dispatcher' for class 'Updater'

Question

I try to create a Telegram bot but I can't use property Update class.

import logging
from multiprocessing import Queue

from telegram import InlineKeyboardButton, InlineKeyboardMarkup
from telegram.ext import Updater, CommandHandler, CallbackQueryHandler

def main():
    update_queue = Queue()
    updater = Updater("API KEY", use_context=True, update_queue=update_queue)

    updater.dispatcher.add_handler(CommandHandler('start', start))
    updater.dispatcher.add_handler(CallbackQueryHandler(button))

    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()

Idle say that there is no dispatcher in Update class. Try update Telegram api, didn't help. Can't find another way to update bot

Answer 1

Since version 20.0 the Updater is only used to fetch updates, from the docs:

Changed in version 20.0:

• Removed argument and attribute user_sig_handler

• The only arguments and attributes are now bot and update_queue as now the sole purpose of this class is to fetch updates. The entry point to a PTB application is now telegram.ext.Application.

---

So if you want to add a handler, use an Application.

An example, taken from the echo bot example:

async def echo(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    """Echo the user message."""
    await update.message.reply_text(update.message.text)


def main() -> None:
    """Start the bot."""
    # Create the Application and pass it your bot's token.
    application = Application.builder().token("TOKEN").build()

    # on different commands - answer in Telegram
    application.add_handler(CommandHandler("start", start))
    application.add_handler(CommandHandler("help", help_command))

    # on non command i.e message - echo the message on Telegram
    application.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, echo))

    # Run the bot until the user presses Ctrl-C
    application.run_polling()


if __name__ == "__main__":
    main()