Python-装饰器

#例1装饰器
def w1(main_func):
  def outer(request,kargs):
    print('before')

    main_func(request,kargs)

    print('after')
return outer

@w1
def show():
  print('show')

#1、@w1,执行w1,把自己装饰的函数的函数名当做参数,w1(show)
#2、show函数重新定义,w1(show)返回值
#3、新show=

#例2
def Before1(request,kargs):
  print 'before'
def After1(request,kargs):
  print 'after'

def Filter(before_func,after_func):
  def outer(main_func):
    def wrapper(request,kargs):

      before_func(request,kargs)

      main_func(request,kargs)

      after_func(request,kargs)

    return wrapper
  return outer

@Filter(before,after)
#1、执行@Filter(before,after)
#2、@outer
#3、新Index
def Index(request,kargs):
  print 'index'

 

posted @ 2018-01-17 01:24  Panpy_Y  阅读(116)  评论(0编辑  收藏  举报