code: def postinit(
          self, target=None, iter=None, body=None, orelse=None, type_annotation=None
      ):
          
          self.target = target
          self.iter = iter
          self.body = body
          self.orelse = orelse
          self.type_annotation = type_annotation
docs: Do some setup after initialisation.
  
          :param target: What the loop assigns to.
          :type target: NodeNG or None
  
          :param iter: What the loop iterates over.
          :type iter: NodeNG or None
  
          :param body: The contents of the body of the loop.
          :type body: list(NodeNG) or None
  
          :param orelse: The contents of the ``else`` block of the loop.
          :type orelse: list(NodeNG) or None