code: def postinit(self, type=None, name=None, body=None):
          
          self.type = type
          self.name = name
          self.body = body
docs: Do some setup after initialisation.
  
          :param type: The types that the block handles.
          :type type: Tuple or NodeNG or None
  
          :param name: The name that the caught exception is assigned to.
          :type name: AssignName or None
  
          :param body:The contents of the block.
          :type body: list(NodeNG) or None