  from rest_framework import exceptions, serializers, status, VERSION
  from rest_framework.compat import SHORT_SEPARATORS, LONG_SEPARATORS, INDENT_SEPARATORS
  from rest_framework.exceptions import ParseError
  from rest_framework.settings import api_settings
  from rest_framework.request import is_form_media_type, override_method
  from rest_framework.utils import encoders
  from rest_framework.utils.breadcrumbs import get_breadcrumbs
  from rest_framework.utils.field_mapping import ClassLookupDict
  
  
  def zero_as_none(value):
 
</s> remove from django.test.client import encode_multipart
from django.utils import six
from rest_framework import exceptions, serializers, status, VERSION
from rest_framework.compat import SHORT_SEPARATORS, LONG_SEPARATORS, INDENT_SEPARATORS
 </s> add from rest_framework.utils import encoders
  from rest_framework import exceptions, serializers, status, VERSION
  from rest_framework.compat import SHORT_SEPARATORS, LONG_SEPARATORS, INDENT_SEPARATORS
  from rest_framework.exceptions import ParseError
  from rest_framework.settings import api_settings


  from rest_framework.utils.breadcrumbs import get_breadcrumbs
  from rest_framework.utils.field_mapping import ClassLookupDict
  
  
  def zero_as_none(value):
keep keep keep keep replace replace keep keep keep keep keep
 Cleanup import following PEP 8 style guide 
rest_framework/renderers.py