Ubuntu 12.04上pip无法工作

Question

我的系统是ubuntu 12.04，使用的是python 2.7。这台机器在公司防火墙后面。

我已经设置好了需要的代理，一切都运行得很好（上网、下载、浏览网页、使用sudo apt-get等都没问题）。

但是，pip安装却不成功。

比如说，如果我尝试安装celery，在pip的日志里我看到以下错误：

/usr/bin/pip run on Thu Mar 20 15:32:15 2014
Downloading/unpacking celery
  Getting page http://pypi.python.org/simple/celery
  Could not fetch URL http://pypi.python.org/simple/celery: timed out
  Will skip URL http://pypi.python.org/simple/celery when looking for download links for celery
  Getting page http://pypi.python.org/simple/
  Could not fetch URL http://pypi.python.org/simple/: timed out
  Will skip URL http://pypi.python.org/simple/ when looking for download links for celery
  Cannot fetch index base URL http://pypi.python.org/simple/
  URLs to search for versions for celery:
  * http://pypi.python.org/simple/celery/
  Getting page http://pypi.python.org/simple/celery/
  Could not fetch URL http://pypi.python.org/simple/celery/: timed out
  Will skip URL http://pypi.python.org/simple/celery/ when looking for download links for celery
  Could not find any downloads that satisfy the requirement celery
No distributions at all found for celery
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 126, in main
    self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 223, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 948, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "/usr/lib/python2.7/dist-packages/pip/index.py", line 152, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for celery

Answer 1

PIP不支持需要身份验证的代理。你有没有这样的代理？如果可以的话，试着把它关掉。

如果关不掉，你可以尝试安装一个叫CNTLM的代理认证服务。

安装完CNTLM后，你可以这样运行pip：

export HTTP_PROXY=http://127.0.0.1:3128
sudo -E pip install some_package

这里有一个详细的例子，讲的是用Ruby gems的情况，链接在这里： http://annelagang.blogspot.com/2012/11/installing-gems-in-ubuntu-1204-using.html