How to make telegram bot reply with a photo?

I have this telegram bot, and i want it to reply to a specific message with a specific photo, to be something like this

from telegram.ext import Updater, CommandHandler, MessageHandler, Filters

def text(update, context):
    text_received = update.message.text
    if text_received == "12345":
        update.message.reply_photo(open('df.png', 'r'))
    else:
        update.message.reply_text(f'Did you say "{text_received}"?')
def main():
    TOKEN = "TOKEN"

    updater = Updater(TOKEN, use_context=True)
    dispatcher = updater.dispatcher

    dispatcher.add_handler(CommandHandler("start", start))
    dispatcher.add_handler(CommandHandler("help", help))

    dispatcher.add_handler(MessageHandler(Filters.text, text))

    dispatcher.add_error_handler(error)

    updater.start_polling()

    updater.idle()

if __name__ == '__main__':
    main()

but I got this error

Photo_invalid_dimensions

How can I make it work?

Solution

According to the sendPhoto docs here:

The photo must be at most 10 MB in size.
The photo's width and height must not exceed 10000 in total.
Width and height ratio must be at most 20.

Based on the error you receive, your photo's width/height doesn't comply to the second rule. You can use sendDocument method which is reply_document instead of reply_photo.