def print_date(fn):

    from datetime import datetime

    from datetime import date

    from datetime import time as time_datetime

    import time

    from datetime import timedelta

    def wrapper():

        print('使唤了%s在'%fn.__name__,time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()))

        return fn()

    return wrapper

@print_date

def 来福():

    print('来福:老爷有何吩咐？')

来福()