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python之Django 或 mod_wsgi 在运行时会修改 sys.path 吗

2025年05月04日28wuhuacong

我设置了 mod_wsgi,并检查它工作正常。 我还提出了简单的 django 项目,并使用以下命令检查它是否正常工作

django-admin.py runserver --settings=mysite.settings 

However, when I run the following wsgi,

import os 
import sys 
 
mysite = '/Users/smcho/Desktop/django/mysite' 
if mysite not in sys.path: 
    sys.path.insert(0,'/Users/smcho/Desktop/django/mysite') 
django = '/Users/smcho/Desktop/django' 
if django not in sys.path: 
    sys.path.insert(0,'/Users/smcho/Desktop/django') 
 
os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings' 
 
import django.core.handlers.wsgi 
application = django.core.handlers.wsgi.WSGIHandler() 

我遇到了这个错误。

[Wed Nov 24 10:36:45 2010] [error] [client 127.0.0.1] ImportError: Could not import settings 'mysite.settings' (Is it on sys.path? Does it have syntax errors?): No module named mysite.settings 

By running following python code with mod_wsgi, I learned that "/Library/Python/2.6/site-packages" is in sys.path.

def application(environ, start_response): 
    status = '200 OK' 
    output = 'Hello World! WSGI working perfectly!\n'*10 
    for i in sys.path: 
        output += str(i) + '\n' 
 
    response_headers = [('Content-type', 'text/plain'), 
                        ('Content-Length', str(len(output)))] 
    start_response(status, response_headers) 
 
    return [output] 

这是我得到的 sys.path。它没有来自 PYTHONPATH 的路径。

/Library/Python/2.6/site-packages/ply-3.3-py2.6.egg 
... 
/Library/Python/2.6/site-packages/nose-0.11.4-py2.6.egg 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python26.zip 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-darwin 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac/lib-scriptpackages 
/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-tk 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-old 
/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-dynload 
/Library/Python/2.6/site-packages  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/PyObjC 
/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/wx-2.8-mac-unicode 

So, I copied 'mysite' django project to '/Library/Python/2.6/site-packages', and now it works OK.

What's wrong with this? It's very likely that even though I added my django project directory to sys.path, django doesn't know (or disregards) this path and the paths from PYTHONPATH environment variable.

    sys.path.insert(0,'/Users/smcho/Desktop/django/mysite') 
    sys.path.insert(0,'/Users/smcho/Desktop/django') 

Django 运行时会修改 sys.path 吗?如果是这样,如何防止这种情况?如果不是,为什么 Django 不知道我添加的路径?

这是我正在使用的系统。

OS : Mac OS X 10.6.5 
Python : 2.6.1 
Django : 1.2.3 

已解决

请引用我的其他PO .简而言之,我将我的 django 项目移动到可从网络访问的 www doc 目录,一切正常。

请您参考如下方法:

您只检查“/Users/smcho/Desktop/django/mysite”是否在 sys.path 中,但如果不在,则添加它和“/Users/smcho/Desktop/django” .要导入 mysite.settings,Python 需要后者,而不是前者。所以你应该确保添加它。