The telegram bot should delete Sticker, Gif, and Voice that are sent to the group;but do not delete them

Question

I built a telegram bot with a python-telegram-bot module.I added the bot to the group and got the bot in the admin group.The bot should be delete when Sticker, Gif or Voice are sent to the group;But the bot does not delete them.bot code:

from telegram.ext import Updater, MessageHandler, Filters

def sticker_method(bot, update):
    bot.delete_sticker(chat_id = update.message.chat_id, sticker_id = update.sticker.chat_id)
    bot.delete_gif(chat_id = update.message.chat_id, gif_id = update.gif.chat_id)
    bot.delete_voice(chat_id = update.message.chat_id, voice_id = update.voice.chat_id)


def main():
    updater = Updater(token='TOKEN')
    dispatcher = updater.dispatcher
    dispatcher.add_handler(MessageHandler(Filters.all, sticker_method))

    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()
# for exit
# updater.idle()

There is no error during execution;But the bot does nothing!

Answer 1

There are no delete_sticker, delete_gif nor delete_voice methods in this library. What you are looking for is bot.delete_message().

Also you can use some extensive filters, for example Filters.sticker and Filters.voice.

More Info (Edited):

For example you can do (with the usage of Filters.sticker and Message.delete()):

def delete_sticker_callback(bot, update):
    update.message.delete()


def main():
    updater = Updater(token='TOKEN')
    dispatcher = updater.dispatcher
    dispatcher.add_handler(MessageHandler(Filters.sticker, delete_sticker_callback))

    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()