How to get telegram's channel description in Telethon?

Question

I'm writing a client of telegram using Telethon. How can i get channel description? get_entity method does not provide channel description.

Holystone

Answer 1

There is GetFullChannelRequest method

from telethon.tl.functions.channels import GetFullChannelRequest
# creating client here
ch = client.get_entity("@mychannel")
ch_full = client(GetFullChannelRequest(channel=ch))
ch_full.full_chat.about # this is what you need

So you may want to inspect full_chat attribute as it includes rest of info

Bodkin

I would just recommend using get_input_entity() to reduce network requests by using caching. – Glovsky

Answer 2

Another example of usage with a bot

from telethon.sync import TelegramClient, events
from telethon import functions

bot = TelegramClient(
    'bot', API_ID, API_HASH).start(bot_token=BOT_TOKEN)

@bot.on(events.NewMessage)
async def my_event_handler(event):
    chat = await event.get_chat()
    result = await bot(functions.messages.GetFullChatRequest(
        chat_id=chat.id
    ))
    print(result.full_chat.about)

bot.run_until_disconnected()

Fritz

Answer 3

You have to use getChat method with chat_id or @username, and .result.description is what you need.

Riannon

Could you add some lines of code. Is getChat method of Channel class? – Holystone

In fact, I didn't know how to use it in Python, it is Bot API method :( – Riannon