pip、代理身份验证和“不支持代理方案”

Question

正在尝试在新的python安装上安装pip。我被代理错误所困扰。看起来像是get pip或urllib3中的bug？？

问题是，我必须经历这里描述的建立CNTLM的痛苦，还是有捷径？

获取pip。py文档中说，使用代理=“[用户：passwd@]代理。服务器：端口”选项来指定代理和相关身份验证。但似乎pip将整个事情原封不动地传递给了urllib3，后者将“myusr”解释为url方案，因为“：”我猜（？）。

C:\ProgFiles\Python27>get-pip.py --proxy myusr:mypswd@111.222.333.444:80
Downloading/unpacking pip
Cleaning up...
Exception:
Traceback (most recent call last):
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\basecommand.py", line 122, in main
    status = self.run(options, args)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\commands\install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\req.py", line 1177, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\index.py", line 194, in find_requirement
    page = self._get_page(main_index_url, req)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\index.py", line 568, in _get_page
    session=self.session,
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\index.py", line 670, in get_page
    resp = session.get(url, headers={"Accept": "text/html"})
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\sessions.py", line 468, in get
    return self.request('GET', url, **kwargs)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\download.py", line 237, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\sessions.py", line 456, in request
    resp = self.send(prep, **send_kwargs)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\sessions.py", line 559, in send
    r = adapter.send(request, **kwargs)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\adapters.py", line 305, in send
    conn = self.get_connection(request.url, proxies)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\adapters.py", line 215, in get_connection
    block=self._pool_block)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\packages\urllib3\poolmanager.py", line 258, in proxy_fro
m_url
    return ProxyManager(proxy_url=url, **kw)
  File "c:\users\sg0219~1\appdata\local\temp\tmpxwg_en\pip.zip\pip\_vendor\requests\packages\urllib3\poolmanager.py", line 214, in __init__
    'Not supported proxy scheme %s' % self.proxy.scheme
AssertionError: Not supported proxy scheme myusr

Storing debug log for failure in C:\Users\myusr\pip\pip.log

C:\ProgFiles\Python27>

当我在没有usrname和密码的情况下运行该命令时，它工作正常，但代理拒绝了请求，说它需要身份验证（“407 authenticationrequired”）。

C:\ProgFiles\Python27>get-pip.py --proxy 111.222.333.444:80
Downloading/unpacking pip
  Cannot fetch index base URL https://pypi.python.org/simple/
  Could not find any downloads that satisfy the requirement pip
Cleaning up...
No distributions at all found for pip
Storing debug log for failure in C:\Users\sg0219898\pip\pip.log

C:\ProgFiles\Python27>cat C:\Users\sg0219898\pip\pip.log
------------------------------------------------------------
C:\ProgFiles\Python27\get-pip.py run on 09/29/14 16:23:26
Downloading/unpacking pip
  Getting page https://pypi.python.org/simple/pip/
  Could not fetch URL https://pypi.python.org/simple/pip/: connection error: ('Cannot connect to proxy.', error('Tunnel connection failed: 407 authenticationrequired',))
  Will skip URL https://pypi.python.org/simple/pip/ when looking for download links for pip
  Getting page https://pypi.python.org/simple/
  Could not fetch URL https://pypi.python.org/simple/: connection error: ('Cannot connect to proxy.', error('Tunnel connection failed: 407 authenticationrequired',))
  Will skip URL https://pypi.python.org/simple/ when looking for download links for pip
  Cannot fetch index base URL https://pypi.python.org/simple/
  URLs to search for versions for pip:
  * https://pypi.python.org/simple/pip/
  Getting page https://pypi.python.org/simple/pip/
  Could not fetch URL https://pypi.python.org/simple/pip/: connection error: ('Cannot connect to proxy.', error('Tunnel connection failed: 407 authenticationrequired',))
  Will skip URL https://pypi.python.org/simple/pip/ when looking for download links for pip
  Could not find any downloads that satisfy the requirement pip
Cleaning up...
  Removing temporary dir c:\users\sg0219~1\appdata\local\temp\pip_build_SG0219898...
No distributions at all found for pip
Exception information:
Traceback (most recent call last):
  File "c:\users\sg0219~1\appdata\local\temp\tmp36ynxd\pip.zip\pip\basecommand.py", line 122, in main
    status = self.run(options, args)
  File "c:\users\sg0219~1\appdata\local\temp\tmp36ynxd\pip.zip\pip\commands\install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "c:\users\sg0219~1\appdata\local\temp\tmp36ynxd\pip.zip\pip\req.py", line 1177, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "c:\users\sg0219~1\appdata\local\temp\tmp36ynxd\pip.zip\pip\index.py", line 277, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for pip

C:\ProgFiles\Python27>

我简要地看了一下urllib3\poolmanager。py和用户名/密码似乎没有任何关系。

Answer 1

import requests
proxy = {
'http' : 'http://138.197.222.35:80',
'https' : 'http://1138.197.222.35:8080'
}

r = requests.get('http://httpbin.org/ip', proxies=proxy)
print (r)

将'超文本传输协议：//'和'https：//'附加到您的ips。
我在使用linux时遇到了这个问题，windows单独使用ip效果很好。

Answer 2

这是因为脚本需要环境变量http_proxy或https_proxy在URL中包含方案

 export http_proxy="http://<hostname>:<port>"
 export https_proxy="https://<hostname>:<port>"

在运行“python获取pip.py”之前

Answer 3

这是在抱怨URL的方案（urlparse被理解为myusr），以解决您应该做的问题：

get-pip.py --proxy http://myusr:mypswd@111.222.333.444:80