def logger(func):
def inner(*args, **kwargs): #1
print "Arguments were: %s, %s" % (args, kwargs)
return func(*args, **kwargs) #2
return inner
>>> @logger
... def foo1(x, y=1):
... return x * y
>>> @logger
... def foo2():
... return 2
>>> foo1(5, 4)
Arguments were: (5, 4), {}
20
>>> foo1(1)
Arguments were: (1,), {}
1
>>> foo2()
Arguments were: (), {}
2
python装饰器的用法
原文：http://www.cnblogs.com/GenDu/p/7878675.html
