AppRegistryNotReady: The translation infrastructure cannot be initialized

Question

When I try to access to my app, I'm getting the following error.

AppRegistryNotReady: The translation infrastructure cannot be initialized before the apps registry is ready. Check that you don't make non-lazy gettext calls at import time

Here is my wsgi.py file:

"""                                                                                                                                                                                     
WSGI config for Projectizer project.                                                                                                                                                    

It exposes the WSGI callable as a module-level variable named ``application``.                                                                                                          

For more information on this file, see                                                                                                                                                  
https://docs.djangoproject.com/en/1.7/howto/deployment/wsgi/                                                                                                                            
"""

import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "Projectizer.settings")

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

And here is the stacktrace.

mod_wsgi (pid=28928): Exception occurred processing WSGI script '/var/www/projectizer/apache/django.wsgi'.

Traceback (most recent call last):

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 187, in __call__

    response = self.get_response(request)

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 199, in get_response

    response = self.handle_uncaught_exception(request, resolver, sys.exc_info())

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 236, in handle_uncaught_exception

    return debug.technical_500_response(request, *exc_info)

File "/usr/local/lib/python2.7/dist-packages/django/views/debug.py", line 91, in technical_500_response

    html = reporter.get_traceback_html()

File "/usr/local/lib/python2.7/dist-packages/django/views/debug.py", line 350, in get_traceback_html

    return t.render(c)

File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 148, in render

    return self._render(context)

File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 142, in _render

    return self.nodelist.render(context)

File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 844, in render

    bit = self.render_node(node, context)

File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py", line 80, in render_node

    return node.render(context)

File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py", line 90, in render

    output = self.filter_expression.resolve(context)

File "/usr/local/lib/python2.7/dist-packages/django/template/base.py", line 624, in resolve

    new_obj = func(obj, *arg_vals)

File "/usr/local/lib/python2.7/dist-packages/django/template/defaultfilters.py", line 769, in date

    return format(value, arg)

File "/usr/local/lib/python2.7/dist-packages/django/utils/dateformat.py", line 343, in format

    return df.format(format_string)

File "/usr/local/lib/python2.7/dist-packages/django/utils/dateformat.py", line 35, in format

    pieces.append(force_text(getattr(self, piece)()))

File "/usr/local/lib/python2.7/dist-packages/django/utils/dateformat.py", line 268, in r

    return self.format('D, j M Y H:i:s O')

File "/usr/local/lib/python2.7/dist-packages/django/utils/dateformat.py", line 35, in format

    pieces.append(force_text(getattr(self, piece)()))

File "/usr/local/lib/python2.7/dist-packages/django/utils/encoding.py", line 85, in force_text

    s = six.text_type(s)

File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py", line 144, in __text_cast

    return func(*self.__args, **self.__kw)

File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/__init__.py", line 83, in ugettext

    return _trans.ugettext(message)

File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 325, in ugettext

    return do_translate(message, 'ugettext')

File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 306, in do_translate

    _default = translation(settings.LANGUAGE_CODE)

File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 209, in translation

    default_translation = _fetch(settings.LANGUAGE_CODE)

File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 189, in _fetch

    "The translation infrastructure cannot be initialized before the "

AppRegistryNotReady: The translation infrastructure cannot be initialized before the apps registry is ready. Check that you don't make non-lazy gettext calls at import time.

Answer 1

I faced the same error. Following worked for me. In your wsgi file change the last line to :

from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()

This have been changed since Django 1.6 to newer version. Here is the post that helped to deploy the django app.

If you want to use Nginx as webserver to deploy django app follow this post.

Answer 2

This is an answer for the less clever ones (like me): Be sure to check the obvious: The error message says: ... Check that you don't make non-lazy gettext calls at import time. So, if you use django's translation in the verbose_name of a model field or on any other part that is evaluated at import time, you need to use the *_lazy version. If not, you'll end up with the error the OP had.

I basically had:

from django.db import models
from django.utils.translation import gettext as _
import datetime
# other things

class myModle(models.Model):
    date = models.DateField(_('Date'), default=datetime.date.today)
    # other defs. and things

And got the same error as the OP, but my wsgi config was fine.

All I had to do was replacing gettext with gettext_lazy (or ugettext with ugettext_lazy) and everything was fine.

Answer 3

@hellsgate solution worked for me.

Specifically from the link referenced by @hellsgate, I changed:

module = django.core.handlers.wsgi:WSGIHandler()

to

module = django.core.wsgi:get_wsgi_application()

in my vassals.ini file

Answer 4

Here is another possible cause for that exception: in my apps.py file I had accidentally added translation for the name of the AppConfig class:

class BookConfig(AppConfig):
    name = _('Book')
    verbose_name = _('Book')

After removing the misplaced translation everything started to work perfectly:

class BookConfig(AppConfig):
    name = 'Book'
    verbose_name = _('Book')