  """
  from __future__ import unicode_literals
  from base64 import b64encode, b64decode
  from collections import namedtuple
  
  from django.utils import six
  from django.template import Context, loader
 
</s> remove from django.core.paginator import InvalidPage, Paginator as DjangoPaginator
from django.template import Context, loader
 </s> add  </s> remove from django.utils.six.moves.urllib import parse as urlparse
 </s> add from django.template import Context, loader </s> remove from django.core.exceptions import ImproperlyConfigured
from django.db import models
 </s> add 
import warnings
  """
  from __future__ import unicode_literals
import warnings
  from base64 import b64encode, b64decode
  from collections import namedtuple
  
  from django.utils import six
  from django.template import Context, loader
keep add keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/pagination.py