Updater' object has no attribute 'add_handler

Question

When entering this code

def main() -> None:
    update_queue = queue.Queue()
    bot_token = "token"

    bot = Bot(token=bot_token)
    updater = Updater(
        bot=bot,
        update_queue=update_queue
    )

    conv_handler = ConversationHandler(
        entry_points=[CommandHandler('book', book_appointment)],
        states={
            NAME: [MessageHandler(filters.TEXT & (~filters.COMMAND), book)],
            PHONE: [MessageHandler(filters.TEXT & (~filters.COMMAND), phone)],
            EMAIL: [MessageHandler(filters.TEXT & (~filters.COMMAND), email)],
            ISSUE: [MessageHandler(filters.TEXT & (~filters.COMMAND), issue)],
            TIME: [MessageHandler(filters.TEXT & (~filters.COMMAND), time)],
        },
        fallbacks=[CommandHandler('start', start)],
    )

    updater.add_handler(conv_handler)
    updater.add_handler(CommandHandler("info", info))

    updater.start_polling()

    updater.idle()

if __name__ == '__main__':
    main()`

an error is issued - Updater' object has no attribute 'add_handler

All necessary libraries were imported correctly: from telegram import Update, Inline Keyboard Button, InlineKeyboardMarkup from telegram.text import Updater, Command Handler, CallbackContext, CallbackQueryHandler, ConversationHandler, MessageHandler, filters import queue from telegram import Bot, downloaded the latest version of python-telegram-bot

How can I fix this problem?

Answer 1

add_handler is an attribute of telegram.Update (not telegram.text.Updater). For v20 of the library please use this wiki to familiarize yourself with the new Updater (it is in telegram.ext.Updater)