请求 - 代理字典 [英] Requests - proxies dictionary
问题描述
我对请求模块感到困惑，特别是代理。
I'm little confused about requests module, especially proxies.
来自文件：
PROXIES
字典映射协议到代理的URL（例如{'http'：
'foo.bar:3128'}）用于每个请求。 / p>
Dictionary mapping protocol to the URL of the proxy (e.g. {‘http’: ‘foo.bar:3128’}) to be used on each Request.
字典中有一种类型的代理吗？我的意思是有可能放在代理列表和请求模块将尝试他们，只使用那些工作？
May there be more proxies of one type in the dictionary? I mean is it possible to put there list of proxies and requests module will try them and use only those which are working?
或者只能有一个代理地址，例如 http ？
Or there can be only one proxy address for example for http?
推荐答案
使用代理参数受限于python字典（即每个键必须是唯一的）。
Using the proxies parameter is limited by the very nature of a python dictionary (i.e. each key must be unique).
import requests
url = 'http://google.com'
proxies = {'https': '84.22.41.1:3128',
'http': '185.26.183.14:80',
'http': '178.33.230.114:3128'}
if __name__ == '__main__':
print url
print proxies
response = requests.get(url, proxies=proxies)
if response.status_code == 200:
print response.text
else:
print 'Response ERROR', response.status_code
输出
http://google.com
{'http': '178.33.230.114:3128', 'https': '84.22.41.1:3128'}
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="en"><head><meta content="Search the world's information, including webpages, images, videos and more. Google has many special features to help you find exactly what you're looking for."
...more html...
如您所见，代理中的 http 字典对应于其分配中最后遇到的字符（即 178.33.230.114:3128 ）。尝试交换 http 。
As you can see, the value of the http protocol key in the proxies dictionary corresponds to the last encountered in its assignment (i.e. 178.33.230.114:3128). Try swapping the http entries around.
因此，答案是否定的，您不能使用简单的字典为同一协议指定多个代理。
So, the answer is no, you cannot specify multiple proxies for the same protocol using a simple dictionary.
我已经尝试使用可迭代作为值，这对我有意义。
I have tried using an iterable as a value, which would make sense to me
proxies = {'https': '84.22.41.1:3128',
'http': ('178.33.230.114:3128', '185.26.183.14:80', )}
但没有运气，会产生错误
but with no luck, it produces an error
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