          Provided for convenience."""
          return STATUS_CODE_TEXT.get(self.status, '')
  
  
  class ResponseException(BaseException):
      def __init__(self, status, content=NoContent, headers={}):
          self.response = Response(status, content=content, headers=headers)
 
</s> remove     def __init__(self, status=200, content=NoContent, headers={}):
 </s> add     """An HttpResponse that may include content that hasn't yet been serialized."""
    def __init__(self, status=200, content=None, headers={}): </s> remove __all__ =['NoContent', 'Response', ]



class NoContent(object):
    """Used to indicate no body in http response.
    (We cannot just use None, as that is a valid, serializable response object.)
    
    TODO: On reflection I'm going to get rid of this and just not support serialized 'None' responses.
    """
    pass
 </s> add __all__ =['Response', 'ErrorResponse'] </s> remove         self.has_content_body = not content is NoContent             # TODO: remove and just use content
        self.raw_content = content      # content prior to filtering - TODO: remove and just use content
        self.cleaned_content = content  # content after filtering      TODO: remove and just use content
 </s> add         self.has_content_body = content is not None
        self.raw_content = content      # content prior to filtering
        self.cleaned_content = content  # content after filtering </s> remove     def emit(self, output=NoContent, verbose=False):
 </s> add     def emit(self, output=None, verbose=False):
class ErrorResponse(BaseException):
    """An exception representing an HttpResponse that should be returned immediatley."""
    def __init__(self, status, content=None, headers={}):
          Provided for convenience."""
          return STATUS_CODE_TEXT.get(self.status, '')
  
  
class ErrorResponse(BaseException):
    """An exception representing an HttpResponse that should be returned immediatley."""
    def __init__(self, status, content=None, headers={}):
class ErrorResponse(BaseException):
    """An exception representing an HttpResponse that should be returned immediatley."""
    def __init__(self, status, content=None, headers={}):
          self.response = Response(status, content=content, headers=headers)
keep keep keep keep replace replace keep
 Rename mixins into Mixin class, rename ResponseException to ErrorResponse, remove NoContent 
djangorestframework/response.py