  from rest_framework import status, exceptions
  from rest_framework.request import Request
  from rest_framework.response import Response
  from rest_framework.settings import api_settings
  from rest_framework.compat import HttpResponseBase, View, set_rollback
  
  
 
</s> remove from rest_framework.compat import HttpResponseBase, View, set_rollback
 </s> add  </s> remove from django.utils.translation import ugettext_lazy as _
 </s> add from django.core.exceptions import PermissionDenied </s> remove from rest_framework.utils import formatting
import inspect
import warnings
 </s> add from rest_framework.compat import HttpResponseBase, View, set_rollback </s> remove from rest_framework.request import is_form_media_type, override_method
from rest_framework.utils import encoders
 </s> add 
from rest_framework.utils import formatting
  from rest_framework import status, exceptions
  from rest_framework.request import Request
from rest_framework.utils import formatting
  from rest_framework.response import Response
  from rest_framework.settings import api_settings
  from rest_framework.compat import HttpResponseBase, View, set_rollback
  
  
keep add keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/views.py