from functools import wraps
def wrapper(func): #func = holiday
@wraps(func)
def inner(*args,**kwargs):
print('在被装饰的函数执行之前做的事')
ret = func(*args,**kwargs)
print('在被装饰的函数执行之后做的事')
return ret
return inner
@wrapper #holiday = wrapper(holiday)
def holiday(day):
'''这是一个放假通知'''
print('全体放假%s天'%day)
return '好开心'
print(holiday.__name__)
print(holiday.__doc__)
ret = holiday(3) #inner
print(ret)
# def wahaha():
# '''
# 一个打印娃哈哈的函数
# :return:
# '''
# print('娃哈哈')
# print(wahaha.__name__) #查看字符串格式的函数名
# print(wahaha.__doc__) #document