# Usage:
    # service.exe install
    # service.exe start
    # service.exe stop
    # service.exe remove

    # you can see output of this program running python site-packages win32libwin32traceutil

    import win32service
    import win32serviceutil
    import win32event
    import win32evtlogutil
    import win32traceutil
    import servicemanager
    import winerror
    import time
    import sys
    import os

    class aservice(win32serviceutil.ServiceFramework):
        _svc_name_ = "aservice"
        _svc_display_name_ = "aservice - It Does nothing"
        _svc_deps_ = ["EventLog"]

        def __init__(self,args):
            win32serviceutil.ServiceFramework.__init__(self,args)
            self.hWaitStop=win32event.CreateEvent(None, 0, 0, None)
            self.isAlive=True

        def SvcStop(self):

            # tell Service Manager we are trying to stop (required)
            self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)

            # write a message in the SM (optional)
            # import servicemanager
            # servicemanager.LogInfoMsg("aservice - Recieved stop signal")

            # set the event to call
            win32event.SetEvent(self.hWaitStop)

            self.isAlive=False

        def SvcDoRun(self):
            import servicemanager
            # Write a 'started' event to the event log... (not required)
            #
            win32evtlogutil.ReportEvent(self._svc_name_,servicemanager.PYS_SERVICE_STARTED, 0,
                                        servicemanager.EVENTLOG_INFORMATION_TYPE,(self._svc_name_, ''))

            # methode 1: wait for beeing stopped ...
            # win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)

            # methode 2: wait for beeing stopped ...
            self.timeout=1000  # In milliseconds (update every second)

            while self.isAlive:

                # wait for service stop signal, if timeout, loop again
                rc=win32event.WaitForSingleObject(self.hWaitStop, self.timeout)

                print "looping"
            # and write a 'stopped' event to the event log (not required)
            #
            win32evtlogutil.ReportEvent(self._svc_name_,servicemanager.PYS_SERVICE_STOPPED, 0,
                                        servicemanager.EVENTLOG_INFORMATION_TYPE,(self._svc_name_, ''))

            self.ReportServiceStatus(win32service.SERVICE_STOPPED)

            return

    if __name__ == '__main__':

        # if called without argvs, let's run !

        if len(sys.argv) == 1:
            try:
                evtsrc_dll = os.path.abspath(servicemanager.__file__)
                servicemanager.PrepareToHostSingle(aservice)
                servicemanager.Initialize('aservice', evtsrc_dll)
                servicemanager.StartServiceCtrlDispatcher()
            except win32service.error, details:
                if details[0] == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
                    win32serviceutil.usage()
        else:
            win32serviceutil.HandleCommandLine(aservice)