Can I change the USERNAME_FIELD in Django 1.5 without creating a custom user?

Question

I am trying to use the email field in the default Django user model as the username. I am using Django 1.5 and I saw that the default user has a USERNAME_FIELD

Answer 1

#Your app's __init__.py

from django.contrib.auth.models import User

User.USERNAME_FIELD = 'email'