telegram.ext.dispatcher - ERROR - No error handlers are registered, logging exception.

[ofu-hub]

Hi all!

Faced a problem. How i can fix it? Give me the answer please.

telegram.ext.dispatcher - ERROR - No error handlers are registered, logging exception.

Code

import logging

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

# Включим ведение журнала
logging.basicConfig(
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO
)
logger = logging.getLogger(__name__)

CHOOSING, SELECTING, PAYMENT, CONFIRMATION = range(4)

cities = ['City A', 'City B', 'City C']
products_by_city = {
    'City A': [
        {'name': 'Product A1', 'price': 10.00, 'location': 'Store A'},
        {'name': 'Product A2', 'price': 20.00, 'location': 'Store A'},
    ],
    'City B': [
        {'name': 'Product B1', 'price': 15.00, 'location': 'Store B'},
        {'name': 'Product B2', 'price': 25.00, 'location': 'Store B'},
    ],
    'City C': [
        {'name': 'Product C1', 'price': 30.00, 'location': 'Store C'},
        {'name': 'Product C2', 'price': 40.00, 'location': 'Store C'},
    ],
}

def start(update, _):
    reply_markup = InlineKeyboardMarkup(build_menu(cities, n_cols=2))
    update.message.reply_text('Please choose a city:', reply_markup=reply_markup)
    return CHOOSING

def build_menu(buttons, n_cols,
               header_buttons=None,
               footer_buttons=None):
    menu = [buttons[i:i + n_cols] for i in range(0, len(buttons), n_cols)]
    if header_buttons:
        menu.insert(0, [header_buttons])
    if footer_buttons:
        menu.append([footer_buttons])
    return menu

def city_choice(update, _):
    user = update.message.from_user
    logger.info("Город %s: %s", user.first_name, update.message.text)
    query = update.callback_query
    query.answer()
    _.user_data['city'] = query.data
    products = get_products_for_city(query.data)  # You need to implement this function
    reply_markup = InlineKeyboardMarkup(build_menu(products, n_cols=1))
    query.edit_message_text(text="Please choose an item:", reply_markup=reply_markup)
    return SELECTING

def item_choice(update, _):
    user = update.message.from_user
    logger.info("Товар %s: %s", user.first_name, update.message.text)
    query = update.callback_query
    query.answer()
    _.user_data['item'] = query.data
    item_info = get_item_info(query.data)  # You need to implement this function
    reply_markup = InlineKeyboardMarkup([[InlineKeyboardButton("Pay", callback_data='pay')]])
    query.edit_message_text(text=item_info, reply_markup=reply_markup)
    return PAYMENT

def payment(update, _):
    user = update.message.from_user
    logger.info("Оплата %s: %s", user.first_name, update.message.text)
    query = update.callback_query
    query.answer()
    # Simulate payment (e.g., send payment details to the user)
    query.edit_message_text(text="Payment details sent. Please wait for confirmation.")
    # Here you would add the logic to process the payment and send the confirmation
    query.edit_message_text(text="Payment confirmed. Your order is being processed.")
    return CONFIRMATION

def confirmation(update, _):
    user = update.message.from_user
    logger.info("Подтверждение оплаты %s: %s", user.first_name, update.message.text)
    query = update.callback_query
    query.answer()
    # Send the confirmation of the order
    query.edit_message_text(text="Order confirmed. Thank you for your purchase!")
    return ConversationHandler.END

def get_products_for_city(city):
    return products_by_city.get(city, [])

def get_item_info(item_name):
    for city_products in products_by_city.values():
        for product in city_products:
            if product['name'] == item_name:
                return f"{product['name']} - Price: ${product['price']}, Location: {product['location']}"
    return "Item not found."

def error(update, context):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, context.error)

def main():
    # Создаем Updater и передаем ему токен вашего бота.
    updater = Updater("TOKEN", use_context=True)

    # Получаем диспетчера для регистрации обработчиков
    dispatcher = updater.dispatcher

    # Определяем обработчик ошибок
    dispatcher.add_error_handler(error)
    
    # Определяем обработчик разговоров `ConversationHandler` 
    # с состояниями CHOOSING, SELECTING, PAYMENT и CONFIRMATION
    conv_handler = ConversationHandler(
        # точка входа в разговор
        entry_points=[CommandHandler('start', start)],
        # этапы разговора, каждый со своим списком обработчиков сообщений
        states={
            CHOOSING: [CallbackQueryHandler(city_choice)],
            SELECTING: [CallbackQueryHandler(item_choice)],
            PAYMENT: [CallbackQueryHandler(payment)],
            CONFIRMATION: [CallbackQueryHandler(confirmation)],
        },
        # точка выхода из разговора
        fallbacks=[CommandHandler('start', start)]
    )

    # Добавляем обработчик разговоров `conv_handler`
    dispatcher.add_handler(conv_handler)

    # Запуск бота
    updater.start_polling()
    updater.idle()

if __name__ == '__main__':
    main()

[Poolitzer]

Please show the full traceback

[ofu-hub]

I added the error handler

def error(update, context):
    """Log Errors caused by Updates."""
    logger.warning('Update "%s" caused error "%s"', update, context.error)
    
dispatcher.add_error_handler(error)

and got this result

UserWarning: If 'per_message=False', 'CallbackQueryHandler' will not be tracked for every message.
  warnings.warn(
2024-01-28 12:00:28,109 - apscheduler.scheduler - INFO - Scheduler started
2024-01-28 12:00:32,747 - __main__ - WARNING - Update "{'update_id': 123123123, 'message': {'date': 1706428831, 'channel_chat_created': False, 'message_id': 11, 'photo': [], 'chat': {'first_name': 'Pavel', 'type': 'private', 'username': 'test', 'id': 123123123, 'last_name': ''}, 'group_chat_created': False, 'new_chat_members': [], 'supergroup_chat_created': False, 'delete_chat_photo': False, 'text': '/start', 'caption_entities': [], 'entities': [{'type': 'bot_command', 'length': 6, 'offset': 0}], 'new_chat_photo': [], 'from': {'language_code': 'ru', 'id': 123123123, 'is_bot': False, 'first_name': 'Pavel', 'username': '', 'last_name': ''}}}" caused error "'str' object has no attribute 'to_dict'"

and old result

2024-01-28 12:04:45,566 - telegram.ext.dispatcher - ERROR - No error handlers are registered, logging exception.
Traceback (most recent call last):
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\ext\dispatcher.py", line 557, in process_update
    handler.handle_update(update, self, check, context)
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\ext\conversationhandler.py", line 627, in handle_update      
    new_state = handler.handle_update(update, dispatcher, check_result, context)
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\ext\handler.py", line 199, in handle_update
    return self.callback(update, context)
  File "C:\Users\pmark\Desktop\bot_test.py", line 32, in start
    update.message.reply_text('Please choose a city:', reply_markup=reply_markup)
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\message.py", line 912, in reply_text
    return self.bot.send_message(
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\bot.py", line 133, in decorator
    result = func(*args, **kwargs)
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\bot.py", line 525, in send_message
    return self._message(  # type: ignore[return-value]
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\ext\extbot.py", line 202, in _message
    result = super()._message(
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\bot.py", line 329, in _message
    data['reply_markup'] = reply_markup.to_json()
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\base.py", line 104, in to_json
    return json.dumps(self.to_dict())
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\inline\inlinekeyboardmarkup.py", line 62, in to_dict
    data['inline_keyboard'].append([x.to_dict() for x in inline_keyboard])
  File "C:\Users\pmark\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\telegram\inline\inlinekeyboardmarkup.py", line 62, in <listcomp>      
    data['inline_keyboard'].append([x.to_dict() for x in inline_keyboard])
AttributeError: 'str' object has no attribute 'to_dict'

[Bibo-Joshi]

def start(update, _):
    reply_markup = InlineKeyboardMarkup(build_menu(cities, n_cols=2))
    update.message.reply_text('Please choose a city:', reply_markup=reply_markup)
    return CHOOSING

InlineKyeboardMarkup expecets a list of list of InlineKeyboardButton objects, but build_menus(cities, n_cols=2) returns a list of list of strings because the entries of cities are strings.

[ofu-hub]

I do not get you. Can you explain the code?

[Bibo-Joshi]

Please have a look at the PTB docs of InlineKeyboardButton.