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網上有很多免費的ip地址，都是可以使用的，但是如果手動來獲取太麻煩，這里通過Python自動抓取，可以批量獲取。

代碼如下：

									# -*- coding: utf-8 -*-

									import re

									import urllib2

									import json

									import os

									import time

									import socket

									class ProxyIp(object):

									  def __init__(self):

									    self.path = os.path.split(os.path.realpath(__file__))[0]

									  # Get latest proxy ip and download to json

									  def update_ip(self):

									    print 'Update Ip'

									    url = 'http://www.ip3366.net/free/'

									    req = urllib2.Request(url)

									    response = urllib2.urlopen(req)

									    matches = re.findall(

									      ur'(\d+.\d+.\d+.\d+)</td>\s+<td>(\d+)</td>\s+<td>.*?</td>\s+<td>(HTTPS?)</td>',

									      response.read(),

									      re.I

									    )

									    ls = []

									    for match in matches:

									      if self.is_open(match[0], match[1]):

									        ls.append({'ip':match[0], 'port':match[1], 'protocol': match[2]})

									    with open('%s/ip.json' % self.path, 'w') as f:

									      json.dump(ls, f)

									    return ls

									  # whether the ips is last or old.

									  def is_last(self):

									    m_time = int(os.path.getmtime('%s/ip.json' % self.path))

									    now_time = int(time.time())

									    return (now_time - m_time) > 60*60*4 # 4 hours

									  @staticmethod

									  def is_open(ip, port):

									    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

									    try:

									      s.connect(ip, int(port))

									      return True

									    except:

									      print 'Faild IP: %s:%s' % (ip, port)

									      return False

									  def get_proxy_ips(self):

									    if not self.is_last():

									      return self.update_ip()

									    else:

									      with open('%s/ip.json' % self.path, 'r') as f:

									        return json.load(f)