装饰器

#-*-coding:utf-8-*-
#__author__ = 王小刀
def w1(main_func):
    def outer(request,kargs):
        print('before')
        main_func(request,kargs)
        print('after')
    return outer

@w1
def show(request,kargs):
    print('show')

show('1','2')