Is it possible to run a Python script as a service in Windows? If possible, how?

Yes you can. I do it using the pythoncom libraries that come included with ActivePython or can be installed with pywin32 (Python for Windows extensions).

This is a basic skeleton for a simple service:

import pythoncom
import win32serviceutil
import win32service
import win32event
import servicemanager
import socket


classAppServerSvc(win32serviceutil.ServiceFramework):
    _svc_name_ ="TestService"
    _svc_display_name_ ="Test Service"def __init__(self,args):
        win32serviceutil.ServiceFramework.__init__(self,args)
        self.hWaitStop = win32event.CreateEvent(None,0,0,None)
        socket.setdefaulttimeout(60)defSvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        win32event.SetEvent(self.hWaitStop)defSvcDoRun(self):
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                              servicemanager.PYS_SERVICE_STARTED,(self._svc_name_,''))
        self.main()def main(self):passif __name__ =='__main__':
    win32serviceutil.HandleCommandLine(AppServerSvc)

Your code would go in the main() method, usually with some kind of infinite loop that might be interrumped by checking a flag, that you set in the SvcStop method