UDP Chat Client

#!/usr/bin/env python
from socket import *
from select import select
import sys

HOST = raw_input('your ip: ')
SERV = raw_input('your serv (hint: enter 192.168.100.15): ')
USER = raw_input('your user: ')


def run():

    sender = socket(AF_INET, SOCK_DGRAM)
    receiver = socket(AF_INET, SOCK_DGRAM)
    receiver.bind((HOST, 6668))
    sender.sendto(USER, (SERV,6667))
    input = [sys.stdin, receiver]
    running = 1
    while running:
        inputready, outputready, exceptready = select(input, [], [])

        for s in inputready:
            if s == receiver:
                data, addr = receiver.recvfrom(1024)
                print data
            elif s == sys.stdin:
                sender.sendto(sys.stdin.readline(),(SERV,6667))
    sender.close;receiver.close()
if __name__ == '__main__':
    run()