Django - python3.4 virtualenv - apache

Question

I have a Django app I've been working on debugging using manage.py runserver.

I'm now attempting to serve it with apache/mod_wsgi.

When I try to open the home page I received a 500 error. The log file shows a syntax error in functools.py.

mod_wsgi (pid=28016): Target WSGI script '/home/username/projects/django/testing/testing/wsgi.py' cannot be loaded as Python module.
mod_wsgi (pid=28016): Exception occurred processing WSGI script '/home/username/projects/django/testing/testing/wsgi.py'.
Traceback (most recent call last):
File "/home/username/projects/django/testing/testing/wsgi.py", line 12, in <module>
  from django.core.wsgi import get_wsgi_application
File "/home/username/.virtualenvs/testing/lib/python3.4/site-packages/django/__init__.py", line 1, in <module>
  from django.utils.version import get_version
File "/home/username/.virtualenvs/testing/lib/python3.4/site-packages/django/utils/version.py", line 7, in <module>
  from django.utils.lru_cache import lru_cache
File "/home/username/.virtualenvs/testing/lib/python3.4/site-packages/django/utils/lru_cache.py", line 2, in <module>
  from functools import lru_cache
File "/home/username/.virtualenvs/testing/lib/python3.4/functools.py", line 291
  cls_or_self, *rest = args
               ^
SyntaxError: invalid syntax

As far as I can tell that is valid python3.4 syntax. So I'm not entirely sure if I have WSGI configured correctly to use my virtualenv.

#testing.conf
<VirtualHost *:80>
    WSGIDaemonProcess django.testing.username.vni user=username group=username python-path=/home/username/.virtualenvs/testing/lib/python3.4/site-packages:/home/username/.virtualenvs/testing/lib/python3.4:/home/username/.virtualenvs/testing
    WSGIProcessGroup django.testing.username.vni

    WSGIScriptAlias / /home/username/projects/django/testing/testing/wsgi.py

    ServerAdmin [email protected]
    ServerName django.testing
    ServerAlias www.django.testing

    Alias /static/ /home/username/projects/django/testing/static/

    <Directory />
        AllowOverride None
        Options -Indexes
    </Directory>

    <Directory /home/username/projects/django/testing/testing>
        <Files wsgi.py>
            Require all granted
        </Files>
    </Directory>

    ErrorLog /var/log/apache2/django.testing.log
    LogLevel warn

</VirtualHost>

I think I might have a problematic python-path above.

#wsgi.py
import os

from django.core.wsgi import get_wsgi_application

import sys
sys.path.append(os.path.dirname(os.path.abspath(__file__)) + "/..")
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

#os.environ.setdefault("DJANGO_SETTINGS_MODULE", "testing.settings")
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")

application = get_wsgi_application()

I'm not sure if I've handled the sys.path.append()'s properly or the DJANGO_SETTINGS_MODULE. They are as they are to hack around a few other errors I ran into.

How did you install mod_wsgi? It seems that you are running a 3.4 project with a mod_wsgi compiled for 2.7. — Daniel Roseman
– Daniel Roseman, Commented May 11, 2015 at 19:42
I think I just apt-get install libapache2-mod-wsgi after a brief search it looks like I should have gotten libapache2-mod-wsgi-py3 instead? — user3817250
– user3817250, Commented May 11, 2015 at 19:50
Depending on your distro/version, you may have to compile a 3.3+ Python mod_wsgi. That's what we had to do for CentOS 6.5 / RHEL6 (yes, ugh), because it wasn't available through yum. If the '-py3' version is available as a package, give it a try first. — FlipperPA
– FlipperPA, Commented May 13, 2015 at 2:12
@DanielRoseman: how did you see that!? Is there something in the error info that I'm missing, or do you need intuition for that? Thanks a lot, by the way :) — Ilja
– Ilja, Commented Feb 6, 2017 at 17:04

user3817250 · Accepted Answer · 2015-05-20 14:56:51Z

4

As suggested by Daniel Roseman, the issue was that I had the wrong version of mod_wsgi for python3.4. I removed libapache2-mod-wsgi and installed libapache2-mod-wsgi-py3.

answered May 20, 2015 at 14:56

user3817250

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1 Comment

Ilja Over a year ago

you are my HERO, i searched sooo long for that (for a different importing problem). Please accept your answer, then it will be easier to find (I suppose, at least^^)

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