Python 实现域名解析为ip的方法

from multiprocessing import Process,Queue,Poolimport socketimport multiprocessingimport os  #写入文件def write(q,lock，filename): while not q.empty():  url = q.get()  print (url)  try:   ip = socket.gethostbyname(url)  except:   ip = "unknow"  print (ip)  with open(filename,'a+') as f:   lock.acquire()      #加锁防止多个进程写入会混乱   try:    f.write(url + " " + ip + "/n")   finally:    lock.release() #添加到队列def readurl(q,n): with open(str(n)+'.txt','r') as f:  lines = f.readlines()  for line in lines:   q.put(line.strip()) return q #根据进程进行拆分txtdef multi(urllist,n): with open(urllist,'r') as f:  lines = f.readlines()  line = int(len(lines)/n)  print (line)  for m in range(0,n):   with open(str(m)+'.txt','a+') as f1:    for i in range(line*m,line*(m+1)):     f1.write(lines[i]) #删除拆分的txt文件def remove(n): for i in range(0,n):  os.remove(str(i)+'.txt') print ("######清除临时文件######")  if __name__ == "__main__":  manager = multiprocessing.Manager() q = manager.Queue() lock = manager.Lock() m = 5       #设置扫描进程数 urllist = "url.txt"    #待解析的url filename = "test.txt"   #结果保存的文件名 multi(urllist,m) p = Pool(m) for i in range(m):  p.apply_async(write,args=(readurl(q,i),lock,filename)) p.close() p.join()  remove(m)  print ("#######全部文件采集完成########")