def log(text):
    def decorator(func=text):
        @functools.wraps(func)
        def wrapper(*args, **kw):
            if(callable(func) == 1):
                print('%s %s():' % (text, func.__name__))
            else:
                print('call %s()' % func.__name__)
            return func(*args, **kw)
        return wrapper
    return decorator


def fx1():
    print('begin call')
    @log('execute')
    def now():
        print('2015-3-25')
    now()
    print('end call')

def fx2():
    print('begin call')
    @log
    def now():
        print('2016-3-25')
    now()
    print('end call')

fx1()
fx2()