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用python 装饰器打log

Python培训
#! /usr/bin/env python# coding=utf-8 from time import timedef logged(when):    def log(f,*args,**kargs):        print("called: function:%s,args:%r,kargs:%r"%(f,args,kargs))    def pre_logged(f):        def wrapper(*args,**kargs):            log(f,*args,**kargs)            return f(*args,**kargs)    def post_logged(f):        def wrapped(*args,**kargs):            now=time()            try:                return f(*args,**kargs)            finally:                log(f,*args,**kargs)                print("time delta:%s"%(time()-now))        return wrapped    try:        #从这里开始调用        return{"pre":pre_logged,"post":post_logged}[when]    except Exception as e:        print(e) @logged("post")def hello(name):    print("hello",name)@logged("post")def test(a,b=1):    print(a+b) hello("world")test(1,2)


Python培训

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