python - pip，代理认证和 "Not supported proxy scheme"

Question

尝试在新的 python 安装上安装 pip。我被代理错误困住了。看起来像 get-pip 或 urllib3 中的错误？？

问题是我必须经历设置 CNTLM as described here 的痛苦还是有捷径？

get-pip.py documentation 说使用 --proxy="[user:passwd@]proxy.server:port" 选项来指定代理和相关身份验证。但似乎 pip 将整个事情传递给 urllib3 ，它将“myusr”解释为 url 方案，因为我猜是“:”(？)。

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>

当我在没有用户名和密码的情况下运行命令时，它工作正常，但代理拒绝请求，说它需要身份验证(“407 身份验证需要”)。

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>

我粗略地看了一下 urllib3\poolmanager.py，它似乎与用户名/密码没有任何关系。

Answer 1

这是在提示 URL 的方案(urlparse 被理解为 myusr)，要解决您应该做的事情:

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