Python 实现域名解析为ip的方法_Python

Python 实现域名解析为ip的方法

2021-05-28 00:24黑面狐 Python

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今天得了一批域名，需要把域名解析成ip

因为量比较大所以采用了多进程和队列的方式

				?

									from multiprocessing import Process,Queue,Pool

									import socket

									import multiprocessing

									import 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txt

									def 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########")