Basic Telegram module system for Telethon

main.py

api_id = 0
api_hash = ""
botToken = ""


from telethon import TelegramClient, events
import mods

bot = TelegramClient('bot', api_id, api_hash)
bot.start(bot_token=botToken)
modules = mods.get("modules")

@bot.on(events.NewMessage(pattern='/start'))
async def start(event):
    """Send a message when the command /start is issued."""
    await event.respond('Hi!')
    raise events.StopPropagation

@bot.on(events.NewMessage)
async def message(event):
    """Handle all the callback methods."""
    params = event.text.split(" ")
    module, params = params[0][1:], params[1:]
    
    index = module.find("@")
    if index != -1: module = module[:index]
    
    print("Module name:", module)
    
    if module in modules:
        resText = await modules.get(module).callback(params, event)
        #await event.respond(resText)

def main():
    """Start the bot."""
    bot.run_until_disconnected()

if __name__ == '__main__':
    main()

mods.py

import os
from importlib import import_module

def get(name):
    mods = {}
    
    print("Loading module.")
    for file in os.listdir(name):
        if file.endswith(".py"):
            name = file[:file.find(".")]
            print(name)
            mods[name] = import_module("modules." + name, name)
    return mods

modules\mystics.py

import random
import urllib.request, bs4

async def callback(params, event):
    url = random.choice(Cards)
    cardUrl = url.replace(".html", ".jpg")
    doc = bs4.BeautifulSoup(urllib.request.urlopen("http://" + url), features="html.parser")
    text = doc.body.find("p").text + "\n" + url
    await event.respond(text, file="http://" + cardUrl, force_document=True)

Cards = [
    "randomtarotcard.com/TheFool.html",
    "randomtarotcard.com/TheMagician.html",
    "randomtarotcard.com/TheHighPriestess.html",
    "randomtarotcard.com/TheEmpress.html",
    "randomtarotcard.com/TheEmperor.html",
    "randomtarotcard.com/TheHierophant.html",
    "randomtarotcard.com/TheLovers.html",
    "randomtarotcard.com/TheChariot.html",
    "randomtarotcard.com/Strength.html",
    "randomtarotcard.com/TheHermit.html",
    "randomtarotcard.com/WheelofFortune.html",
    "randomtarotcard.com/Justice.html",
    "randomtarotcard.com/TheHangedMan.html",
    "randomtarotcard.com/Death.html",
    "randomtarotcard.com/Temperance.html",
    "randomtarotcard.com/TheDevil.html",
    "randomtarotcard.com/TheTower.html",
    "randomtarotcard.com/TheStar.html",
    "randomtarotcard.com/TheMoon.html",
    "randomtarotcard.com/TheSun.html",
    "randomtarotcard.com/Judgement.html",
    "randomtarotcard.com/TheWorld.html",
]