lhc_bot.py

from ics import Calendar
from telegram.ext import Updater, CommandHandler


def ics_calendar():
    with open("lhc.ics", "r") as f:
        calendar = Calendar(f.read())
        return calendar


def quando(update, context):
    calendar = ics_calendar()
    next_event = min(list(calendar.events), key=lambda e: e.begin)

    event = {
        "title": next_event.name,
        "date": next_event.begin.strftime("%d/%m/%Y"),
        "url": next_event.url,
    }
    next_event_msg = f"Vai rolar \"{event['title']}\" em {event['date']}. Mais informações em {event['url']}."
    update.message.reply_text(next_event_msg)


API_TOKEN = "<TOKEN>"
updater = Updater(API_TOKEN, use_context=True)

updater.dispatcher.add_handler(CommandHandler("quando", quando))

updater.start_polling()
updater.idle()