Python 2.7 用python诊断代理问题

因此，我尝试使用Python2.7来完成各种需要从internet提取数据的工作。我不是很成功，我正在寻找帮助来诊断我做错了什么

首先，我通过像这样定义代理来让pip工作，

pip安装--proxy=http://username:password@someproxy.com:8080numpy

因此python必须能够通过它

然而，当涉及到实际编写一个可以实现同样功能的.py脚本时，我没有成功。我首先尝试在urllib2中使用以下代码：

import urllib2

uri = "http://www.python.org"
http_proxy_server = "someproxyserver.com"
http_proxy_port = "8080"
http_proxy_realm = http_proxy_server
http_proxy_user = "username"
http_proxy_passwd = "password"

# Next line = "http://username:password@someproxyserver.com:8080"
http_proxy_full_auth_string = "http://%s:%s@%s:%s" % (http_proxy_user,
                                                      http_proxy_passwd,
                                                      http_proxy_server,
                                                      http_proxy_port)

def open_url_no_proxy():
    urllib2.urlopen(uri)

    print "Apparent success without proxy server!"    

def open_url_installed_opener():
    proxy_handler = urllib2.ProxyHandler({"http": http_proxy_full_auth_string})

    opener = urllib2.build_opener(proxy_handler)
    urllib2.install_opener(opener)
    urllib2.urlopen(uri)

    print "Apparent success through proxy server!"

if __name__ == "__main__":
    open_url_no_proxy()
    open_url_installed_opener()

然而，我只是得到了这个错误：

URLError: <urlopen error [Errno 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond>

raise MaxRetryError(_pool, url, error or ResponseError(cause)) MaxRetryError: HTTPSConnectionPool(host='www.python.org', port=443): Max retries exceeded with url: / (Caused by ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authorization Required',)))

我得到了这个错误：

URLError: <urlopen error [Errno 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond>

raise MaxRetryError(_pool, url, error or ResponseError(cause)) MaxRetryError: HTTPSConnectionPool(host='www.python.org', port=443): Max retries exceeded with url: / (Caused by ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authorization Required',)))

---

如果您能为我诊断此问题提供帮助，我将不胜感激。

我的问题的解决方案是使用“请求”模块，请参阅下面的线程：

mtt2p列出这个代码，它为我工作

import requests
import time
class BaseCheck():
    def __init__(self, url):
        self.http_proxy  = "http://user:pw@proxy:8080"
        self.https_proxy = "http://user:pw@proxy:8080"
        self.ftp_proxy   = "http://user:pw@proxy:8080"
        self.proxyDict = {
                      "http"  : self.http_proxy,
                      "https" : self.https_proxy,
                      "ftp"   : self.ftp_proxy
                    }
        self.url = url
        def makearr(tsteps):
            global stemps
            global steps
            stemps = {}
            for step in tsteps:
                stemps[step] = { 'start': 0, 'end': 0 }
            steps = tsteps
        makearr(['init','check'])
        def starttime(typ = ""):
            for stemp in stemps:
                if typ == "":
                    stemps[stemp]['start'] = time.time()
                else:
                    stemps[stemp][typ] = time.time()
        starttime()
    def __str__(self):
        return str(self.url)
    def getrequests(self):
        g=requests.get(self.url,proxies=self.proxyDict)
        print g.status_code
        print g.content
        print self.url
        stemps['init']['end'] = time.time()
        #print stemps['init']['end'] - stemps['init']['start']
        x= stemps['init']['end'] - stemps['init']['start']
        print x


test=BaseCheck(url='http://google.com')
test.getrequests()

---

您的代理是否在https://或http://上？在pip示例中是http://，但在urllib3示例中是https://.If 这不起作用，您可以尝试使用请求（构建在urllib3上，也被pip使用）：是的，我使用了http和https，实际上，当我使用urllib3将其设置为http时，它没有任何错误，但是，它返回一个页面，告诉我代理需要身份验证。我尝试了一个带有请求的脚本，但我得到了类似的错误。我开始认为这与提供认证细节有关。可能是。奇怪的是皮普能工作。你确定pip实际上是在攻击代理而不是以某种方式忽略它吗？您可以使用tcpdump/ngrep之类的工具来监视流量，并查看它实际在做什么。例如。