python-telegram-bot

pip install python-telegram-bot

from telegram import (
    Update,
    KeyboardButton,
    ReplyKeyboardMarkup,
    ReplyKeyboardRemove,
)
from telegram.ext import (
    Updater,
    CallbackContext,
    Filters,
    MessageHandler,
)

button_help = 'Помощь'


def button_help_handler(update: Updater, context: CallbackContext):
    update.message.reply_text(
        text='Помощь',
        reply_markup=ReplyKeyboardRemove(),
    )


def message_handler(update: Updater, context: CallbackContext):
    text = update.message.text
    if text == button_help:
        return button_help_handler(update, context)

    reply_markup = ReplyKeyboardMarkup(
        keyboard=[
            [
                KeyboardButton(text=button_help),
            ]
        ],
        resize_keyboard=True,
    )
    update.message.reply_text(
        text='тект',
        reply_markup=reply_markup,
    )


def main():
    updater = Updater(
        token=token,
        use_context=True,
    )
    print(updater.bot.get_me())
    updater.dispatcher.add_handler(
        MessageHandler(
            filters=Filters.all,
            callback=message_handler
    ))
    updater.start_polling()
    updater.idle()

main()