old_contents: """
  Very partial backport of the `http.HTTPStatus` enum from Python 3.5
  
  This implements just enough of the interface for our purposes, it does not
  attempt to be a full implementation.
  """
  
  class HTTPStatus(int):
  
      phrase = None
  
      def __new__(cls, code, phrase):
          instance = int.__new__(cls, code)
          instance.phrase = phrase
          return instance
  
  
  HTTPStatus.OK = HTTPStatus(200, 'OK')
  HTTPStatus.NOT_MODIFIED = HTTPStatus(304, 'Not Modified')
  HTTPStatus.METHOD_NOT_ALLOWED = HTTPStatus(405, 'Method Not Allowed')
  
new_contents: """
  Very partial backport of the `http.HTTPStatus` enum from Python 3.5
  
  This implements just enough of the interface for our purposes, it does not
  attempt to be a full implementation.
  """
  
  
  class HTTPStatus(int):
  
      phrase = None
  
      def __new__(cls, code, phrase):
          instance = int.__new__(cls, code)
          instance.phrase = phrase
          return instance
  
  
  HTTPStatus.OK = HTTPStatus(200, 'OK')
  HTTPStatus.NOT_MODIFIED = HTTPStatus(304, 'Not Modified')
  HTTPStatus.METHOD_NOT_ALLOWED = HTTPStatus(405, 'Method Not Allowed')
  
subject: Fix whitespace error to keep flake8 happy