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python telegrambot store chat id – Telegram API

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.

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2

Answers


  1. 0

    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

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  2. 0

    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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