Simple example running an echo bot on IRC using asyncio and quamash

irc_echo_bot.py

import asyncio
import sys
import signal
import logging

from PyQt5.QtWidgets import QApplication
from quamash import QEventLoop

from PyIRC.signal import event
from PyIRC.io.asyncio import IRCProtocol
from PyIRC.extensions import bot_recommended


logging.basicConfig(level="DEBUG")


class EchoBotIRCProtocol(IRCProtocol):

    @event("commands", "PRIVMSG")
    def respond(self, event, line):
        params = line.params
        if len(params) < 2:
            return
        self.send("PRIVMSG", (line.hostmask.nick, params[1]))


def sigint(*protos):
    for proto in protos:
        try:
            proto.send("QUIT", ["Terminating due to ctrl-c!"])
            proto.close()
        except Exception as e:
            # Ugh! A race probably happened. Yay, signals.
            pass
    print()
    print("Terminating due to ctrl-c!")
    quit()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    loop = QEventLoop(app)
    asyncio.set_event_loop(loop)

    args = {
        'serverport': ('weber.freenode.net', 6667),
        'ssl': False,
        'username': 'EchoBotTesting',
        'nick': 'EchoBotTesting',
        'gecos': 'I am a test, pls ignore :)',
        'extensions': bot_recommended,
        'join': ['#testingpyirc'],
    }

    inst = EchoBotIRCProtocol(**args)
    loop.add_signal_handler(signal.SIGINT, sigint, inst)
    loop.run_until_complete(inst.connect())

    try:
        loop.run_forever()
    finally:
        loop.close()