python telegrambot store chat id - Telegram API

exec85
July 9, 2021
258 views
0 votes
2 Answers

I am wondering how I could store/read out a user chat ID to later send them messages.

Example would be, that the user is adding my telegram bot and sends him a message.
Later on in my program at some point, when a sepcific situation occurs, I want to send a message to the specific user.

For a simple example I have this code:

a=1
b=2

if a > b:
     # at this point python should send a message to a user via telegram privat chat

else:
    # send a different message

I know how to handle a response to a command sent by the user in the telegram chat, but not how to send a message to a user without receiving a command first. I think there fore I would need to have a way to store the users chat Id first to later refer to that Id when sending the message.

The point is I want to compile my program to .exe later on and send it to some friends and it should work for them as well.

Answers

You can simply add the id in a list WHITOUT ANY THIRD PARTS PAKAGE

import telebot

TOKEN = ""
bot = telebot.TeleBot(TOKEN)

admin = # your chat id
users = []

@bot.message_handler(commands=['start'])
def start_message(msg):
    bot.send_message(msg.chat.id, 'Welcome!')
    if msg.chat.id not in users: # if the id isn't already in the users list
        users.append(msg.chat.id)

@bot.message_handler(commands=['send_at_all']) # A way to use the list
def sendAtAll(msg):
    if msg.chat.id == admin: # only if YOU start the command the message will be sent
        for id in users: # for every user that has start the bot
            bot.send_message(id, "I'm sending this message at all the users")

# If an user wants to stop the notifications...

@bot.message_handler(commands=['unsubscribe'])
def sendAtAll(msg):
    del users[msg.chat.id]
    bot.send_message(msg.chat.id, "If you want to receive the notification click /start")


# Every time you are going to restart the bot polling the content of the users list will be deleated so...

@bot.message_handler(commands=['save_user_list'])
def sendAtAll(msg):
    if msg.chat.id == admin:
        bot.send_message(admin, users) 
# the list will be sent to your telegram chat, when you activate the bot you can add the list manually

bot.polling()

You can also create a class and save every chat id as an object

import telebot
from random import choice

TOKEN = ''
bot = telebot.TeleBot(TOKEN)

admin = # your chat id
users = []

class Userbot: # The class User is already in the pyTelegramBotAPI
    def __init__(self, msg):
        self.id = msg.chat.id
        self.username = '@' + msg.from_user.username

    def contestWinner(self):
        text = f'Hi {self.username}, you have win!!!'
        bot.send_message(self.id, text)



@bot.message_handler(commands=['start'])
def start(msg):
    bot.send_message(msg.chat.id, 'Welcome!')
    for el in users: 
        if msg.chat.id not in el.id:
            users.append(Userbot(msg))
# you can't type 'if msg.chat.id not in users.id' because only the object inside the list can use the method id


@bot.message_handler(commands=['extract']) # another way to use the list
def extract(msg):
    if msg.chat.id == admin:
        winner = choice(users)
        winner.contestWinner()


@bot.message_handler(commands=['unsubscribe'])
def sendAtAll(msg):
    for el in users: 
        if msg.chat.id == el.id:
            del users[el]
    # only if the user inside the object is the same as the user that has sent the message the object will be deleated
    bot.send_message(msg.chat.id, "If you want to receive the notification click /start")


@bot.message_handler(commands=['save_user_list'])
def sendAtAll(msg):
    if msg.chat.id == admin:
        bot.send_message(admin, users)

bot.polling()

Apologise for my terrible english

It is very easy, just use a simple database.
MongoDB is the best choose in my opinion.
Create an account on it and follow this tutorial.

First get the user_id

userid1 = str(update.message.chat_id)

Then store it into the database

    import pymongo
    from pymongo import MongoClient

    cluster = MongoClient("mongodb+srv://<user>:<password>@cluster0.uubct.mongodb.net/users?retryWrites=true&w=majority")
    db = cluster["users"]
    collection = db["users"]

    results = collection.find({"_id": int(userid1)})

    if results.count() == 0:
        print("post")
        
        post = {"_id": int(userid1)}
        collection.insert_one(post)

    else:
        print("User already in the database!")

For getting it you need to use the find() method.

results = collection.find()

    for result in results:
        var1 = (result["_id"])

        print(var1)
        
        context.bot.send_message(chat_id=prova,
                                 text = "Hi")

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python telegrambot store chat id – Telegram API

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