Communicate with authorized user only

check.py

#   Made by fb.com/Tester2009 [ Hakase ]
#   github: https://github.com/alepcat1710
#   May 17, 2017
#
#   Use this code to build a better world
#   Simply credit to me @tester2009.
# 

import telebot
API_TOKEN = ''
bot = telebot.TeleBot(API_TOKEN)

uid_list = [] # store user id here.

@bot.message_handler(commands=['id'])
def check_id(message):
  g_id = message.chat.id # this is chat/group id
  u_id = message.from_user.id # this is user/personal id
  
  if u_id in uid_list:
    bot.reply_to(message, "Hello there")
  else:
    bot.reply_to(message, "Unauthorized user lolz")
    
    
bot.polling()