code: def postinit(self, target, annotation, simple, value=None):
          
          self.target = target
          self.annotation = annotation
          self.value = value
          self.simple = simple
docs: Do some setup after initialisation.
  
          :param target: What is being assigned to.
          :type target: NodeNG
  
          :param annotation: The type annotation of what is being assigned to.
          :type: NodeNG
  
          :param simple: Whether :attr:`target` is a pure name
              or a complex statement.
          :type simple: int
  
          :param value: The value being assigned to the variables.
          :type: NodeNG or None