Virtualenv 不使用全局包 [英] Virtualenv not using global packages

问题描述

请帮助诊断 virtualenv 问题.它要下载安装numpy和lxml，同时在全局站点包中有符合版本要求的已安装版本.

Please help to diagnose virtualenv problem. It wants to download and install numpy and lxml, while there are installed versions in global site-packages that match version requirements.

$ virtualenv venv # not restricting access to site-packages
...

$ . venv/bin/activate
(venv)$ python -c 'import numpy; print numpy._version_; print numpy.__file__'
1.5.1
/usr/lib/pymodules/python2.7/numpy/_init_.pyc

(venv)$ grep numpy setup.py
'numpy>=1.5.1',

(venv)$ python setup.py develop
...
Searching for numpy==1.5.1 # Why exact ==1.5.1? Where is it from?
Reading http://pypi.python.org/simple/numpy/
Reading http://numpy.scipy.org
Reading http://sourceforge.net/project/showfiles.php?group_id=1369&package_id=175103
Reading http://numeric.scipy.org
Best match: numpy 1.5.1
Downloading http://pypi.python.org/packages/source/n/numpy/numpy-1.5.1.tar.gz#md5=376ef150df41b5353944ab742145352d

版本:Ubuntu 11.04、Python 2.7.1+、virtualenv 1.4.9

Versions: Ubuntu 11.04, Python 2.7.1+, virtualenv 1.4.9

更新:virtualenv 1.5.1 和更新版本按预期工作.还是很好奇是什么问题.

Upd: virtualenv 1.5.1 and newer works as expected. Still curious what was the problem.

推荐答案

根据提出这个问题的时间，我的回答并不能解决 OP 的问题，但我遇到了类似的问题，于是想到了这个问题.我弄清楚我的问题是什么，所以我将这个答案发布给后代和其他遇到这个问题的人.

Based on when this question was asked, my answer would not solve the issue the OP had, but I was having a similar problem and came upon this question. I figured out what my problem was so I am posting this answer for posterity and anyone else who runs across this.

从 virtualenv 1.7 开始 --no-site-packages 成为默认行为.要使全局站点包可导入(以前是默认设置)，您必须在创建 virtualenv 时使用选项 --system-site-packages.

Starting with virtualenv 1.7 --no-site-packages became the default behavior. To make global site packages importable (which used to be the default) you must use the option --system-site-packages when you create the virtualenv.

这篇关于Virtualenv 不使用全局包的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！