say-hi.py

#!/usr/bin/env python2
import os, pwd, select, signal, socket, sys, time

irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
username = pwd.getpwuid(os.getuid())
hostname = socket.gethostname()

if not sys.stdin.isatty(): sys.stdin = open('/dev/tty')

def hello():
    irc.send(b'PRIVMSG zeekay :hello, i am from the internet!\r\n')

def goodbye(*args):
    irc.send(b'DISCONNECT')
    print '\nbye!'
    sys.exit(0)

signal.signal(signal.SIGINT, goodbye)

print 'Hi {0}! Please wait while I connect your call... (press CTRL-C to exit)'.format(username)
irc.connect(('irc.freenode.net', 6667))
irc.send('NICK i_am_{0}\r\n'.format(username).encode('UTF-8'))
irc.send('USER {0} {1} irc.freenode.net :{0}\r\n'.format(username, hostname).encode('UTF-8'))

while True:
    read, write, error = select.select([sys.stdin, irc],[],[])

    for i in read:
        if i == sys.stdin:
            irc.send('PRIVMSG zeekay :{0}\r\n'.format(i.readline()).encode('UTF-8'))
            sys.stdout.write('> ')
            sys.stdout.flush()

        elif i == irc:
            buffer = i.recv(1024)
            for line in buffer.splitlines():
                try:
                    _, info, line = line.decode('UTF-8').split(':', 2)
                except ValueError:
                    break

                server, type = info.split(' ')[:2]
                if type == 'PRIVMSG':
                    sys.stdout.write('\x08' * 2)
                    sys.stdout.write('< {0}\n> '.format(line))
                    sys.stdout.flush()

                elif type == 'NOTICE':
                    hello()
    time.sleep(0.01)