simple irc bot

1 - save the below as bot.py

import irc.bot
import irc.strings
from irc.client import ip_numstr_to_quad, ip_quad_to_numstr
from math import *
import os
import re
import subprocess

class TestBot(irc.bot.SingleServerIRCBot):
    def __init__(self, channel, nickname, server, port=6667):
        irc.bot.SingleServerIRCBot.__init__(self, [(server, port)], nickname, nickname)
        self.channel = channel

    def on_nicknameinuse(self, c, e):
        c.nick(c.get_nickname() + "_")

    def on_welcome(self, c, e):
        c.join(self.channel)

    def on_privmsg(self, c, e):
        self.do_command(e, e.arguments[0])

    def on_pubmsg(self, c, e):
        a = e.arguments[0].split(":", 1)
        if len(a) > 1 and irc.strings.lower(a[0]) == irc.strings.lower(self.connection.get_nickname()):
            self.do_command(e, a[1].strip())
        return

    def on_dccmsg(self, c, e):
        # non-chat DCC messages are raw bytes; decode as text
        text = e.arguments[0].decode('utf-8')
        c.privmsg("You said: " + text)

    def on_dccchat(self, c, e):
        if len(e.arguments) != 2:
            return
        args = e.arguments[1].split()
        if len(args) == 4:
            try:
                address = ip_numstr_to_quad(args[2])
                port = int(args[3])
            except ValueError:
                return
            self.dcc_connect(address, port)

    def do_command(self, e, cmd):
        nick = e.source.nick
        c = self.connection

        if cmd == "disconnect":
            self.disconnect()
        elif cmd == "die":
            self.die()
        elif re.search(r"^exec\s+.*", cmd):
            command = re.sub(r"^exec\s", "", cmd)
            command1 = command.split()
            output = subprocess.Popen(command1 ,stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            mgso = output.stdout.read().split("\n")
            for i in mgso:
                if i == "":
                    continue
                c.privmsg(nick, i)
            mgse = output.stderr.read().split("\n")
            for i in mgse:
                if i == "":
                    continue
                c.privmsg(nick, i)
        elif cmd == "test":
            c.privmsg(nick, "result")
        elif re.search(r"^math\s+.*", cmd):
            result = ""
            command = re.sub(r"^math\s", "", cmd)
            toexec = "result = " + command
            exec(toexec)
            c.privmsg(nick, result)

        elif cmd == "stats":
            for chname, chobj in self.channels.items():
                c.notice(nick, "--- Channel statistics ---")
                c.notice(nick, "Channel: " + chname)
                users = sorted(chobj.users())
                c.notice(nick, "Users: " + ", ".join(users))
                opers = sorted(chobj.opers())
                c.notice(nick, "Opers: " + ", ".join(opers))
                voiced = sorted(chobj.voiced())
                c.notice(nick, "Voiced: " + ", ".join(voiced))
        elif cmd == "dcc":
            dcc = self.dcc_listen()
            c.ctcp("DCC", nick, "CHAT chat %s %d" % (
                ip_quad_to_numstr(dcc.localaddress),
                dcc.localport))
        else:
            c.notice(nick, "Not understood: " + cmd)

def main():
    import sys
    if len(sys.argv) != 4:
        print("Usage: testbot <server[:port]> <channel> <nickname>")
        sys.exit(1)

    s = sys.argv[1].split(":", 1)
    server = s[0]
    if len(s) == 2:
        try:
            port = int(s[1])
        except ValueError:
            print("Error: Erroneous port.")
            sys.exit(1)
    else:
        port = 6667
    channel = sys.argv[2]
    nickname = sys.argv[3]

    bot = TestBot(channel, nickname, server, port)
    bot.start()

if __name__ == "__main__":
    main()

2- the options available of the bot are
- disconnect
- die
- dcc to open chat
- exec to execute command on server
- math to do basic math

3- usage
connect the bot to server (127.0.0.1), and it will server on channel "#channel1" with the name bot
$ python bot.py localhost "#channel1" "bot

4- after the run the command above the bot will join the chat room channel #channel1
- snapshot of the bot joining in the channel

5- open a private message to run the command on the bot

for example
- list ip configuration
exec ifconfig lo

- list pi value
math pi

-get factorial of 5
math factorial(5)

-get value of cos of pi
math cos(pi)


- snapshot of bot interaction