telegram bot get chat id

get_chat_id.py

from telegram.ext import Updater, MessageHandler, CallbackContext
from telegram.ext.filters import Filters
import requests
#require python-telegram-bot  requests(optional)

def show_id(update,context):
    bot=context.bot
    chat_id = update.message.chat_id
    print(chat_id)
    if(chat_id<0):
        print("from group")
        bot.send_message(chat_id=chat_id,text="group: "+str(chat_id))
    else:
        print("from user")
        bot.send_message(chat_id=chat_id,text="chat: "+str(chat_id))


def main():
    token_file=open("secret.txt", mode='r')
    my_token= token_file.readline()[:-1]
    #print(my_token)
    #str1="https://api.telegram.org/bot{token}/getUpdates".format(token=my_token)
    #print(str1)
    #print(requests.get(str1))
    with open("proxy.txt", mode='r') as f:
        my_proxy=f.readline()[:-1]
    REQUEST_KWARGS={
        'proxy_url': my_proxy,
    }

    updater = Updater(my_token, use_context=True, request_kwargs=REQUEST_KWARGS)
    dp = updater.dispatcher
    dp.add_handler(MessageHandler(filters=Filters.all,callback=show_id))
    updater.start_polling()
    updater.idle()

if __name__ == '__main__':
    main()