Python to make Windows system services

I recently had a Python program that needed to be installed and run as a Windows system service, and I ran into some pitfalls in the process, so I organized it.

Python Service Classes

First the Python program needs to call some Windows system APIs in order to act as a system service, as follows:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import time

import win32api
import win32event
import win32service
import win32serviceutil
import servicemanager


class MyService():

  _svc_name_ = "MyService"
  _svc_display_name_ = "My Service"
  _svc_description_ = "My Service"

  def __init__(self, args):
    ('init')
    .__init__(self, args)
    self.stop_event = (None, 0, 0, None)

  def SvcDoRun(self):
    (win32service.SERVICE_START_PENDING)
    try:
      (win32service.SERVICE_RUNNING)
      ('start')
      ()
      ('wait')
      (self.stop_event, )
      ('done')
    except BaseException as e:
      ('Exception : %s' % e)
      ()

  def SvcStop(self):
    (win32service.SERVICE_STOP_PENDING)
    ('stopping')
    ()
    ('stopped')
    (self.stop_event)
    (win32service.SERVICE_STOPPED)

  def start(self):
    (10000)

  def stop(self):
    pass

  def log(self, msg):
    (str(msg))

  def sleep(self, minute):
    ((minute*1000), True)

if __name__ == "__main__":
  if len() == 1:
    ()
    (MyService)
    ()
  else:
    (MyService)

Pyinstaller Packaging

pyinstaller -F

test (machinery etc)

# Installation services
dist\ install

# Start the service
sc start MyService

# Discontinued services
sc stop MyService

# Delete services
sc delete MyService

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