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.

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 random
bot = 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 charecter
password =  "".join(random.choice(characters) for x in range(random.randint(8, 16)))
bot.send_message(message.chat.id,f"Genarated Password {password}")
bot.polling()

• Run the code

python filename.py

I hope you enjoy building your first Telegram bot.