  from django.conf.urls import url
  from django.core.urlresolvers import NoReverseMatch
  from rest_framework import views
  from rest_framework.reverse import reverse
  from rest_framework.response import Response
  from rest_framework.compat import get_resolver_match, OrderedDict
  from rest_framework.urlpatterns import format_suffix_patterns
 
</s> remove from rest_framework.compat import get_resolver_match, OrderedDict
from rest_framework.response import Response
 </s> add  </s> remove from django.core.exceptions import ImproperlyConfigured
 </s> add  </s> remove from rest_framework import parsers
from rest_framework import renderers
 </s> add  </s> remove from rest_framework.response import Response
 </s> add 
from django.core.exceptions import ImproperlyConfigured

  from django.conf.urls import url
  from django.core.urlresolvers import NoReverseMatch
from django.core.exceptions import ImproperlyConfigured

  from rest_framework import views
  from rest_framework.reverse import reverse
  from rest_framework.response import Response
  from rest_framework.compat import get_resolver_match, OrderedDict
  from rest_framework.urlpatterns import format_suffix_patterns
keep add keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/routers.py