  import os
  import binascii
  
  from django.db import models
  from django.utils.encoding import python_2_unicode_compatible
  
  
  # Prior to Django 1.5, the AUTH_USER_MODEL setting does not exist.
  # Note that we don't perform this code in the compat module due to
 
</s> remove from django.conf import settings
 </s> add  </s> remove import warnings
 </s> add  </s> remove import binascii
 </s> add  </s> remove from django.test.client import Client as DjangoClient
from django.test.client import ClientHandler
 </s> add 
from django.conf import settings
  import os
  import binascii
  
  from django.db import models
from django.conf import settings
  from django.utils.encoding import python_2_unicode_compatible
  
  
  # Prior to Django 1.5, the AUTH_USER_MODEL setting does not exist.
  # Note that we don't perform this code in the compat module due to
keep keep keep add keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/authtoken/models.py