利用python爬取软考试题之ip自动代理

# IP地址取自国内髙匿代理IP网站：http://www.xicidaili.com/nn/
# 仅仅爬取首页IP地址就足够一般使用

from bs4 import BeautifulSoup
import requests
import random

#获取当前页面上的ip
def get_ip_list(url, headers):
 web_data = requests.get(url, headers=headers)
 soup = BeautifulSoup(web_data.text)
 ips = soup.find_all('tr')
 ip_list = []
 for i in range(1, len(ips)):
 ip_info = ips[i]
 tds = ip_info.find_all('td')
 ip_list.append(tds[1].text + ':' + tds[2].text)
 return ip_list

#从抓取到的Ip中随机获取一个ip
def get_random_ip(ip_list):
 proxy_list = []
 for ip in ip_list:
 proxy_list.append('http://' + ip)
 proxy_ip = random.choice(proxy_list)
 proxies = {'http': proxy_ip}
 return proxies

#国内高匿代理IP网主地址
url = 'http://www.xicidaili.com/nn/'
#请求头
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36'}
#计数器，根据计数器来循环抓取所有页面的ip
num = 0
#创建一个数组，将捕捉到的ip存放到数组
ip_array = []
while num < 1537:
 num += 1
 ip_list = get_ip_list(url+str(num), headers=headers)
 ip_array.append(ip_list)
for ip in ip_array:
 print(ip)
#创建随机数，随机取到一个ip
# proxies = get_random_ip(ip_list)
# print(proxies)