标签:http ar os java on 2014 log ef as
最近在学习廖雪峰的python教程,在装饰器的一章中有个思考题:
<!-- lang: python -->
import functools
def log(params):
def decorator(): @functools.wraps(params) def wrapper(*args,**kw): print ‘begin call 1‘ params(*args,**kw) print ‘end call 1‘ return wrapper def decorator2(func): @functools.wraps(func) def wrapper2(*args,**kw): print params,‘begin call 2‘ func(*args,**kw) print ‘end call 2‘ return wrapper2 if hasattr(params,‘__call__‘): return decorator() else: return decorator2
@log
def now():
print ‘2014‘
@log(‘execute‘)
def now2():
print ‘2015‘
now()
print
now2()
标签:http ar os java on 2014 log ef as
原文地址:http://my.oschina.net/nickwill/blog/344152