python程序作为windows服务

用以下代码，安装python程序为windows服务
# SmallestService.py

import win32serviceutil
import win32service
import win32event
import os
import test
import time

class wm_py_service(win32serviceutil.ServiceFramework):
    _svc_name_ = "wm_py_service"
    _svc_display_name_ = "wm Python Service"
    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self, args)
        # Create an event which we will use to wait on.
        # The "service stop" request will set this event.
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)

    def SvcStop(self):
        # Before we do anything, tell the SCM we are starting the stop process.
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        # And set my event.
        win32event.SetEvent(self.hWaitStop)

    def SvcDoRun(self):
        # 把你的程序代码放到这里就OK了
        inst = test.service()
        inst.fun()
        win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)

if __name__=='__main__':
    win32serviceutil.HandleCommandLine(wm_py_service)
    # 括号里的名字可以改成其他的，必须与class名字一致；


但是启动服务报错1053，什么问题？高手帮忙