How to get a message from Telegram groups by API?

Question:

I was looking for some way to listen and catch new messages provided by telegram groups.

I have not found libraries or API in order to do this in Python.

Someone having any suggestion?

Asked By: RedVelvet

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Source

Answers:

There are two ways to achieve your goal:

Method 1:

My suggested library for python: python-telegram-bot

  1. Create a bot.
  2. Add the bot to the desired group as administrator.
  3. Listen to messages as you normally listen in bots.

Method 2:

My suggested library for python: Telethon

  1. Join the desired group as a user (not a bot).
  2. Create a simple client that listens to new messages.
Answered By: Ali Hashemi

Using Telethon

Replace channel_name with your telegram channel. 

from telethon import TelegramClient, events, sync

# Remember to use your own values from my.telegram.org!
api_id = ...
api_hash = '...'
client = TelegramClient('anon', api_id, api_hash)

@client.on(events.NewMessage(chats='channel_name'))
async def my_event_handler(event):
    print(event.raw_text)

client.start()
client.run_until_disconnected()
Answered By: Martin Olivari