#-*- coding: UTF-8 -*-import subprocess,sys,threadingreload(sys)sys.setdefaultencoding('utf-8')def ip2name(mutex,ip,fp,kw):    nbtstatchild = subprocess.Popen(['nbtstat','-A',ip],shell=True,stdout=subprocess.PIPE)    while nbtstatchild.poll() == None:        rsts = nbtstatchild.stdout.readlines()        if len(rsts) <> 0:            for i in rsts:                ii = i.strip().decode('GBK')                if ii.find(kw) <> -1:                    if mutex.acquire(1):                        with open(fp,'ab') as fw:                            fw.write(ip)                            for line in rsts:                                fw.write(line.strip().decode('GBK'))                        mutex.release()        else:            passif __name__ =='__main__':    lst=[]    bb=range(4,6) #IP第三位    bb.extend([69,71,74]) #IP第三位    dd=range(2,255) #IP第四位    for b in bb:        for d in dd:            ip = '192.168.' + str(b) + '.' + str(d)            lst.append(ip)               fp='d:\\ip.txt' #将结果写到该文件中    kw='XS' #要查找的关键字    tnum=30 #线程数量    mutex = threading.Lock()    for i in range(0,len(lst),tnum):            threads=[]            for IP in lst[i:i+tnum]:                print IP                t = threading.Thread(target=ip2name,args=(mutex,IP,fp,kw))                t.setDaemon(True)                t.start()                threads.append(t)            for t in threads:                t.join()