code: def make_keyword_extractor(method):
      
  
      args, _1, _2, defs = inspect.getargspec(method)
      key_args = args[-len(defs or []):]
      def extractor(keys):
          new = {}
          for a in key_args:
              if a in keys:
                  new[a] = keys[a]
                  del keys[a]
          return new
      return extractor
docs: Removes all keyword parameters required by 'method' from
      dictionary 'keys' and returns them in a separate dictionary.