This may just be a wontfix, but wanted to at least make the issue known. In shortrest_framework.compat cannot be imported during the Django's app registration/initialization process when django-guardian is in theINSTALLED_APPS.guardian.shortcuts imports Django's auth models, which in turn raises anAppRegistryNotReady exception.

Relevant portion of the stack trace:

File"lib/python2.7/site-packages/django_filters/compat.py",line19,in<module>fromrest_framework.compatimportcoreapiFile"lib/python2.7/site-packages/rest_framework/compat.py",line210,in<module>importguardian.shortcuts# Fixes #1624File"lib/python2.7/site-packages/guardian/shortcuts.py",line6,in<module>fromdjango.contrib.auth.modelsimportGroup,Permission

Seecarltongibson/django-filter#525 for more context.

Checklist

• I have verified that that issue exists against themaster branch of Django REST framework.
• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• This is not a usage question. (Those should be directed to thediscussion group instead.)
• This cannot be dealt with as a third party library. (We prefer new functionality to bein the form of third party libraries where possible.)
• I have reduced the issue to the simplest possible case.
• I have included a failing test as a pull request. (If you are unable to do so we can still accept the issue.)

Steps to reproduce

As an example, add'guardian' and'django_filters' toINSTALLED_APPS.