There is no __file__ when settings.DEBUG = False

[Belegnar]

Processing admin.py with following code failed when DEBUG = False

from django.contrib import admin
from django.contrib.auth.models import User

import os.path

app_name = os.path.basename(os.path.dirname(__file__))
models_module = __import__('%s' % app_name).models
models_list = [models_module.__dict__[model] for model in models_module.__dict__ \
               if type(models_module.__dict__[model]) == type(User) \
               and models_module.__dict__[model].__module__ == '%s.models' % app_name]
admin.site.register(models_list)

because of file = None. Working fine when DEBUG = True

[Simon Meers]

This must be something else in your setup; I can't see how DEBUG could possibly affect __file__ in this way. I quickly tested in an admin.py to ensure I wasn't insane.