How do you run a Python script as a service in Windows?

Question

I am sketching the architecture for a set of programs that share various interrelated objects stored in a database. I want one of the programs to act as a service which prov

Answer 1

Step by step explanation how to make it work :

1- First create a python file according to the basic skeleton mentioned above. And save it to a path for example : "c:\PythonFiles\AppServerSvc.py"

import win32serviceutil
import win32service
import win32event
import servicemanager
import socket


class AppServerSvc (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)

    def SvcStop(self):
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        win32event.SetEvent(self.hWaitStop)

    def SvcDoRun(self):
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                          servicemanager.PYS_SERVICE_STARTED,
                          (self._svc_name_,''))
        self.main()

    def main(self):
        # Your business logic or call to any class should be here
        # this time it creates a text.txt and writes Test Service in a daily manner 
        f = open('C:\\test.txt', 'a')
        rc = None
        while rc != win32event.WAIT_OBJECT_0:
            f.write('Test Service  \n')
            f.flush()
            # block for 24*60*60 seconds and wait for a stop event
            # it is used for a one-day loop
            rc = win32event.WaitForSingleObject(self.hWaitStop, 24 * 60 * 60 * 1000)
        f.write('shut down \n')
        f.close()

if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(AppServerSvc)

2 - On this step we should register our service.

Run command prompt as administrator and type as:

sc create TestService binpath= "C:\Python36\Python.exe c:\PythonFiles\AppServerSvc.py" DisplayName= "TestService" start= auto

the first argument of binpath is the path of python.exe

second argument of binpath is the path of your python file that we created already

Don't miss that you should put one space after every "=" sign.

Then if everything is ok, you should see

[SC] CreateService SUCCESS

Now your python service is installed as windows service now. You can see it in Service Manager and registry under :

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TestService

3- Ok now. You can start your service on service manager.

You can execute every python file that provides this service skeleton.