'function' object has no attribute '_name_'错误

试验装饰器decorator的代码时：

def log(func):    def wrapper(*args,**kw):        print('call %s():'%func._name_)        return func(*args,**kw)    return wrapper@logdef now():    print('2017-7-21')now()

出现报错：AttributeError: ‘function’ object has no attribute ‘name’

后发现错误func.name应该为func._name_

于是代码改为：

def log(func):    def wrapper(*args,**kw):        print('call %s():'%func.__name__)        return func(*args,**kw)    return wrapper@logdef now():    print('2017-7-21')now()

build,运行正确！