Question

我是一个蟒蛇菜鸟。已经安装了virtualenv和pip，一切看起来都不错，但是当尝试导入通过pip安装的软件包时，python找不到它们。我在OS X上并在/usr/bin中拥有系统python 2.6，因此通过软件包安装程序将2.7安装到/usr/local/bin。在安装pip和virtualenv时，我确保通过将PATH设置为/usr/local/bin来使用2.7 python。

(pysite)sbeam@pris ~/Sites]$ pip freeze
Django==1.4
Markdown==2.1.1
psycopg2==2.4.5
wsgiref==0.1.2

(pysite)sbeam@pris ~/Sites]$ echo $PYTHONPATH

(pysite)sbeam@pris ~/Sites]$ which python
/Users/sbeam/.virtualenvs/pysite/bin/python

(pysite)sbeam@pris ~/Sites]$ env | grep VIRTUAL
VIRTUALENVWRAPPER_PROJECT_FILENAME=.project
VIRTUAL_ENV=/Users/sbeam/.virtualenvs/pysite
VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python
VIRTUALENVWRAPPER_HOOK_DIR=/Users/sbeam/.virtualenvs
VIRTUALENVWRAPPER_LOG_DIR=/Users/sbeam/.virtualenvs

(pysite)sbeam@pris ~/Sites]$ python
Python 2.7.3 (v2.7.3:70274d53c1dd, Apr  9 2012, 20:52:43) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> from pprint import pprint as pp
>>> pp(sys.path)
['',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/distribute-0.6.27-py2.7.egg',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-0.7.2-py2.7.egg',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload',
 '/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages']
>>> import markdown
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named markdown

Answer 1

请注意，默认情况下，根据设计和要求virtualenv的新版本（1.7+）不包含site-packages。

http://www.virtualenv.org/en/latest/news.html

您可以在virtualenv创建中明确使用--system-site-packages，请参阅：

http://www.virtualenv.org/en/latest/index.html#the-system-site-packages-option

或者您可以直接获取冻结的输出，并在virtualenv中执行pip install -r requirements.txt

pip安装的软件包不在sys.path中

1 个答案: