Python:在 urllib2 中禁用 http_proxy [英] Python: Disable http_proxy in urllib2

问题描述

我使用代理集作为环境变量(导出 http_proxy=example.com).对于使用 urllib2 的一次调用，我需要暂时禁用它，即.取消设置 http_proxy.我已经尝试了文档和网络中建议的各种方法，但到目前为止还无法取消设置代理.到目前为止，我已经尝试过:

I am using a proxy set as an environment variable (export http_proxy=example.com). For one call using urllib2 I need to temporarily disable this, ie. unset the http_proxy. I have tried various methods suggested in the documentation and interwebs, but so far have been unable to unset the proxy. So far I have tried:

# doesn't work
req = urllib2.Request('http://www.google.com')
req.set_proxy(None,None)
urllib2.urlopen(req)

# also doesn't work
urllib.getproxies = lambda x = None: {}

推荐答案

urllib2 文档 建议以下应该有效.这是您尝试过的方法之一吗?

The urllib2 documentation suggests the following should work. Is it one of the approaches you have tried?

import urllib2

proxy_handler = urllib2.ProxyHandler({})
opener = urllib2.build_opener(proxy_handler)
page = opener.open('http://www.google.com')

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