使用wsgi和virtualenv时出现django错误：无法导入设置

Question

我已经阅读了大量有关wsgi没有看到Django settings.py文件问题的帖子，最好的结论是我的Django项目不是在我的PYTHONPATH。

复杂的事情是，我在系统级运行Django的旧版本，但是这个项目需要在virtualenv中运行。

我已经成立了位于/ usr /本地/ pythonenv /选举的virtualenv，我的项目位于位于/ usr /本地/ pythonenv /选/ src目录的/ dev /选

我.wsgi文件是一个在/ usr /本地/ pythonenv /选/ src目录的/ dev /选/配置/

我可以用$蟒蛇manage.py runserver命令

运行Django的服务器，但使用Apache和mod_wsgi的时候，我得到的错误：

ImportError: Could not import settings 'election.settings' (Is it on sys.path? Does it have syntax errors?): No module named election.settings 

这是我的.wsgi文件：

import os 
import sys 
import site 

sys.stdout = sys.stderr 

HERE = env_root = os.path.abspath(os.path.dirname(__file__)) 
found = False 
while env_root != '/': 
    env_root = os.path.abspath(os.path.dirname(env_root)) 
    if os.path.exists(os.path.join(env_root, 'bin', 'activate')): 
     found = True 
     break 
assert found, "didn't find a virtualenv in any parent of %s" % HERE 

sitepackages_root = os.path.join(env_root, 'lib') 
assert os.path.exists(sitepackages_root), "no such dir %s" % sitepackages_root 
for d in os.listdir(sitepackages_root): 
    if d.startswith('python'): 
     site.addsitedir(os.path.join(sitepackages_root, d, 'site-packages')) 
     break 
else: 
    raise RuntimeError("Could not find any site-packages to add in %r" % env_root) 

os.environ['DJANGO_SETTINGS_MODULE'] = 'election.settings' 
os.environ['PYTHON_EGG_CACHE'] = '/tmp/election-python-eggs' 

import django.core.handlers.wsgi 
application = django.core.handlers.wsgi.WSGIHandler() 

这里的回溯：

[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122] File "/usr/lib/pymodules/python2.6/django/core/handlers/base.py", line 33, in load_middleware 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122]  for middleware_path in settings.MIDDLEWARE_CLASSES: 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122] File "/usr/lib/pymodules/python2.6/django/utils/functional.py", line 269, in __getattr__ 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122]  self._setup() 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122] File "/usr/lib/pymodules/python2.6/django/conf/__init__.py", line 40, in _setup 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122]  self._wrapped = Settings(settings_module) 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122] File "/usr/lib/pymodules/python2.6/django/conf/__init__.py", line 75, in __init__ 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122]  raise ImportError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e) 
[Sat Jan 07 21:54:19 2012] [error] [client 192.168.150.122] ImportError: Could not import settings 'election.settings' (Is it on sys.path? Does it have syntax errors?): No module named election.settings 

Answer 1

你在哪里添加 '在/ usr /本地/ pythonenv /选/ src目录的/ dev' 到sys.path的？

您还使WSGI文件的其余部分比需要的更加复杂。

确保你去观察：

http://code.google.com/p/modwsgi/wiki/WhereToGetHelp?tm=6#Conference_Presentations

还可以阅读：

http://code.google.com/p/modwsgi/wiki/VirtualEnvironments

，并使用activate_this方法，如演示文稿中提到激活虚拟环境。