python--IP代理池验证可用性
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背景:无论是自己爬虫爬取的IP代理还是购买的IP代理服务都会存在IP不稳定的情况。通过不断的校验来判断IP是否可用。
#!/usr/bin/env python2.7 #coding:utf8 import os,time,sys #import mymodul #from lxml import etree import re import random import requests,os import sys #每10分钟验证一次IP的可用性 def __extract_ipaddress(text_content): result_list=[] for line in text_content.split(‘\n‘): #从每一行提取ip m=re.search("((?:(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))\.){3}(?:25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d))))",line) ip,port=‘‘,‘‘ if m: ip = m.group(0) # 从包含IP的行提取端口 m=re.search("\D(\d{2,5})\D*",line[line.find(ip)+len(ip):]) if m: port=m.group(1) result_list.append((ip, m.group(1))) return result_list #提取IP,验证黄页 def test_poxy((_ip,_port),test_url=‘http://www.yp.net.cn/schinese//about/AboutCnYPol.asp‘): import requests try: session = requests.session() session.proxies = {‘http‘: ‘{}:{}‘.format(_ip,_port)} headers = {‘User-Agent‘: ‘Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0‘} resp = session.get(test_url, timeout=10, headers=headers) #print len(resp.content) except BaseException as e: #print ‘test_poxy error:‘,e return (_ip,_port,-1,-1) # if len(resp.content)<100000: # print ‘######‘,resp.content return (_ip,_port,resp.elapsed.seconds,len(resp.content)) if __name__ == ‘__main__‘: from multiprocessing.dummy import Pool as ThreadPool #while 1: #验证Proxy.txt中的IP,将可用IP写入proxy_ip.txt with open(‘/root/scrit/Proxy.txt‘,‘r‘) as f , open(‘/root/scrit/proxy_ip.txt‘,‘wb‘) as fout: ip_list = __extract_ipaddress(f.read()) #print(‘ipcount‘,len(ip_list)) pool=ThreadPool(30) result=pool.map(test_poxy, ip_list) pool.close() pool.join() result = sorted(result, key=lambda d:d[3], reverse=True) result=set(result) for item in result: if int(item[3])>7000: #print item fout.write(‘{}:{}\n‘.format(item[0],item[1])) fout.close() #print mymodul.get_time_str(),u‘一次检测结束‘ #time.sleep(3) Data = open("/root/scrit/proxy_ip.txt").read() langth = len(Data) if not langth: get_IP() else: sys.exit(0)
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