Question

我将Django版本从1.6.7升级到1.7后，试图让事情变得有效。看起来我无法专注于正确的事情。到目前为止，我试图恢复这种情况。

事情是：如果我在我的wsgi.py文件中留下命令django.setup（），当我尝试访问我的网站时，我收到内部服务器错误（500）。看着日志，我得到：

[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] mod_wsgi (pid=23258): Target WSGI script '/home/thrasher/webapps/django/myproject.wsgi' cannot be loaded as Python module.
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] mod_wsgi (pid=23258): Exception occurred processing WSGI script '/home/thrasher/webapps/django/myproject.wsgi'.
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] Traceback (most recent call last):
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]   File "/home/thrasher/webapps/django/myproject.wsgi", line 16, in <module>
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]     application = get_wsgi_application()
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]   File "/home/thrasher/webapps/django/lib/python2.7/django/core/wsgi.py", line 14, in get_wsgi_application
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]     django.setup()
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]   File "/home/thrasher/webapps/django/lib/python2.7/django/__init__.py", line 21, in setup
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]     apps.populate(settings.INSTALLED_APPS)
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]   File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py", line 78, in populate
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1]     raise RuntimeError("populate() isn't reentrant")
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] RuntimeError: populate() isn't reentrant

但是，如果我评论django.setup（）调用，尝试访问该网站会获得此堆栈跟踪：

Environment:


Request Method: GET
Request URL: http://www.creepyvisions.it/

Django Version: 1.7
Python Version: 2.7.8
Installed Applications:
('django.contrib.auth',
 'django.contrib.admin.apps.SimpleAdminConfig',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'django.contrib.admindocs',
 'myproject.archivio',
 'sorl.thumbnail',
 'django.contrib.sitemaps',
 'rest_framework')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/home/thrasher/webapps/django/lib/python2.7/django/core/handlers/base.py" in get_response
  98.                 resolver_match = resolver.resolve(request.path_info)
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in resolve
  338.             for pattern in self.url_patterns:
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in url_patterns
  367.         patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in urlconf_module
  361.             self._urlconf_module = import_module(self.urlconf_name)
File "/usr/local/lib/python2.7/importlib/__init__.py" in import_module
  37.     __import__(name)
File "/home/thrasher/webapps/django/myproject/urls.py" in <module>
  33.                        url(r'^admin/', include(admin.site.urls)),
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in urls
  260.         return self.get_urls(), self.app_name, self.name
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in get_urls
  221.             self.check_dependencies()
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in check_dependencies
  159.         if not apps.is_installed('django.contrib.admin'):
File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py" in is_installed
  223.         self.check_apps_ready()
File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py" in check_apps_ready
  124.             raise AppRegistryNotReady("Apps aren't loaded yet.")

Exception Type: AppRegistryNotReady at /
Exception Value: Apps aren't loaded yet.

为了完成，这是与wsgi相关的代码：

myprojext.wsgi

import os
import sys

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproject.settings")

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

wgsi.py

import django
from django.core.handlers.wsgi import WSGIHandler


def get_wsgi_application():
    #django.setup()
    return WSGIHandler()

对我而言，事情看起来很奇怪，我在官方Django文档和各种论坛中进行了大量搜索，但我仍然无法使事情正常运行。任何建议都会非常感激。

Answer 1

事实证明，问题是django.contrib.admin的INSTALLED_APPS中的重复。它看起来是问题的根源。一旦我删除了第二个引用，我在wsgi.py中取消注释django.setup（），然后事情变得晴朗和清晰。现在一切正常。

升级到Django 1.7 - AppRegistryNotReady异常

1 个答案: