def wrapper(func):
print 'before'
func()
print 'after'
return func
@wrapper
def yuan():
print 'yuan called'
yuan()
yuan()
这段代码执行的结果是这样的:
before
yuan called
after
yuan called
yuan called
为什么第二个yuan()执行的时候,装饰器没有起作用?我用的Python2.7