Build your first telegram bot in python

What are Telegram bots..?

Bots are simply Telegram accounts operated by software — not people — and they’ll often have AI features. They can do anything — teach, play, search, broadcast, remind, connect, integrate with other services, or even pass commands to the Internet of Things.

Getting Started

We will build a password generator bot in python.

Before we start to build a bot. We need to create/register a bot in the telegram.

Create a chatbot with Bot Father

Go to @BotFather
Send the /newbot command .which leads to create a new bot.
Set the name and username for your bot.
BotFather will send the Bot API token.

ScreenShot : Create/Register a chatbot with bot father

Creating bot environment

Create Virtual Environment

python3 -m venv .venv

Activate Virtual Environment

For Linux :

source .venv/bin/activate

For Windows:

.venv\Scripts\Activate

Install required Libraries

Libraries we need for our bot –

pyTelegramBotAPI: A simple, but extensible Python implementation for the Telegram Bot API.

pip install pyTelegramBotAPI

Write a program for bot

Import Require Libaries

import telebot
import string
from random

Create an instance of the TeleBot class

bot = telebot.TeleBot("TOKEN")

Note: Replace TOKEN with your own API token.

Define a message handler that handles incoming /start command

@bot.message_handler(commands=['start'])
def send_welcome(message):
    bot.reply_to(message,f"Hello,{message.chat.username}")

Define another message handler that handles /genrate_password command

When users send this command to bot. The bot will send Generated password string

@bot.message_handler(commands=['genrate_password'])
def genrate_password(message):    characters = string.ascii_letters + string.punctuation + string.digits#Generate random charecter    password =  "".join(random.choice(characters) for x in range(random.randint(8, 16)))
    bot.send_message(message.chat.id,f"Genarated Password {password}")

Start the bot using polling

bot.polling()

Our code file looks like

import telebot
import string
from randombot = telebot.TeleBot("TOKEN")@bot.message_handler(commands=['start'])
def send_welcome(message):
 bot.reply_to(message,f"Hello,{message.chat.username}")@bot.message_handler(commands=['genrate_password'])
def genrate_password(message):characters = string.ascii_letters + string.punctuation + string.digits#Generate random charecterpassword =  "".join(random.choice(characters) for x in range(random.randint(8, 16)))bot.send_message(message.chat.id,f"Genarated Password {password}")bot.polling()