带有mod_wsgi的Apache上的Django：设置上的ImportError

Question

I am serving a Django site on Apache2 server with mod_wsgi. Here is what my mysite/mysite directory looks like:

(mysite_venv)➜  mysite  tree mysite -I "*.pyc"
    mysite
    ├── __init__.py
    ├── db.sqlite3
    ├── settings
    │   ├── __init__.py
    │   ├── base.py
    │   └── local.py
    ├── urls.py
    └── wsgi.py

When I run this project using python manage.py runmodwsgi I get an Internal Server Error with this message in the logs:

[wsgi:error] [pid 8900] ImportError:         No module named mysite.settings.local
[mpm_prefork:notice] [pid 8898] AH00170: caught SIGWINCH, shutting down gracefully

Here is what my manage.py looks like:

import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings.local")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)

But when I change the directory mysite/mysite like this:

(mysite_venv)➜  mysite  tree mysite -I "*.pyc"
mysite
├── __init__.py
├── base.py
├── db.sqlite3
├── local.py
├── urls.py
└── wsgi.py

And change the code os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings.local") to os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.local") the server runs OK! How can I fix this issue?

PS: When I use python manage.py runserver to run this project, everthing is OK too.

Here is what my sys.path looks like:

/Users/gagaxiaolong/PycharmProjects/mysite
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python27.zip
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/plat-darwin
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/plat-mac
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/plat-mac/lib-scriptpackages
/Users/gagaxiaolong/.virtualenvs/mysite_venv/Extras/lib/python
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/lib-tk
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/lib-old
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/lib-dynload
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/site-packages
/Users/gagaxiaolong/.virtualenvs/mysite_venv/lib/python2.7/site-packages/IPython/extensions

There is a similar question asked 9 months ago : How to debug basic issues configuring django to be served with apache and mod-wsgi? , I tried the ways mentioned in the answer but does not work.

Answer 1

You need to check sys.path in your manage.py file (use pdb for this). I think it is because you have a directory structure like this 'parent_dir/mysite/mysite/settings/' and your sys.path has an entry 'parent_dir'. So system is trying to find settings module in parent_dir/mysite . Change your manage.py to debug

import os
import sys

if __name__ == "__main__":
    import ipdb; ipdb.set_trace()
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings.local")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)