运行此代码时获取异常

Question

#!/usr/bin/env python3

import time
import sys
import os
from datetime import datetime


while True:

    now = datetime.now().time()
    print (now.strftime("%H:%M:%S")),

    print("\r"),
    time.sleep(1)

    if now.hour == 10 and now.minute == 15 and now.second ==00:
        os.execv("/home/pi/Desktop/rasp_2016/dummy_code.py", sys.argv) 
        print ("rebooted")
        exit

我正在尝试开发代码，以在特定时间重新启动脚本。在满足给定时间的if条件之前，它可以正常工作。它将引发一个异常，即：

Exception has occurred:OSError
[Errno 8] Exec format error. 

有什么可能的解决方案？