將list合并成dict，采集網站的代理IP格式如下：

ip_nodes=['177.220.136.22','195.178.157.216' ,'179.85.149.192']

port_nodes=['80','8080','3128']

方法一：

tmp = dict(zip(ip_nodes, port_nodes))

方法二(使用list表達式)：

tmp={ ip_nodes[i]:port_nodes[i] for i in range(len(port_nodes))}

方法三：

combined = {}

for i in range(len(ip_nodes)) :

combined[ip_nodes[i]] = port_nodes[i]

方法四：lambda：

dict(map(lambda x,y:[x,y],ip_nodes,port_nodes))

#!/usr/bin/env python

# coding: utf-8

import requests, urllib2, time

from lxml import etree

url = "http://www.xicidaili.com/wt/"

headers = {'content-type': 'text/html',

'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/22.0'}

ip_check_url = 'http://www.mshishang.com/a/20161027/149787.html'

user_agent = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0'

socket_timeout = 10

# Check proxy

def check_proxy(ip, port):

try:

ip = "%s:%s" % (ip, port)

proxy_ip = {"http": ip}

proxy_handler = urllib2.ProxyHandler(proxy_ip)

# proxy = urllib2.ProxyHandler(proxy_ip)

opener = urllib2.build_opener(proxy_handler)

# opener.addheaders = [('User-agent', user_agent)] #這句加上以后無法正常檢測，不知道是什么原因。

urllib2.install_opener(opener)

req = urllib2.Request(ip_check_url)

time_start = time.time()

conn = urllib2.urlopen(req)

# conn = urllib2.urlopen(ip_check_url)

time_end = time.time()

detected_pip = conn.read()

proxy_detected = True

except urllib2.HTTPError, e:

print "ERROR: Code ", e.code

return False

except Exception, detail:

print "ERROR: ", detail

return False

return proxy_detected

try:

r = requests.get(url, headers=headers)

r.raise_for_status() # 如果響應狀態碼不是 200，就主動拋出異常

tree = etree.HTML(r.content)

ip_nodes = tree.xpath("//tr//td[2]/text()")

port_nodes = tree.xpath("//tr//td[3]/text()")

# print port_nodes

"""

# blablabla...

combined = {}

for i in range(len(students)) :

combined[students[i]] = courses[i]

"""

# tmp = zip(ip_nodes, port_nodes)

# dict((y, x) for x, y in tmp)

tmp = dict(zip(ip_nodes, port_nodes))

print tmp

for (ip, port) in tmp.items():

proxy_detected = check_proxy(ip, port)

if proxy_detected:

print (" WORKING: " + ip+":"+port)

else:

print " FAILED: %s " % (ip,)

# tmp1={ ip_nodes[i]:port_nodes[i] for i in range(len(port_nodes))}

except requests.RequestException as e:

print(e)

總結

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