How to constantly run Python script in the background on Windows?

Question

I have created a script that moves files from one folder to another. But since the original folder is the Downloads folder I need it to always run in the background.

I also have a standard Batch file that looks something like this:

@py C:\\Python\Scripts\moveDLs.py %*

I'm using Windows 10. I have found info for Linux and OS on how to use nohup in the batch file. Is there a Windows version?

If there is do you need to execute the script every time you restart or switch the PC on?

Also, how do you terminate the process when you do manage to make it permanent?

Many Thanks

Answer 1

On Windows, you can use pythonw.exe in order to run a python script as a background process:

Python scripts (files with the extension .py) will be executed by python.exe by default. This executable opens a terminal, which stays open even if the program uses a GUI. If you do not want this to happen, use the extension .pyw which will cause the script to be executed by pythonw.exe by default (both executables are located in the top-level of your Python installation directory). This suppresses the terminal window on startup.

For example,

C:\ThanosDodd\Python3.6\pythonw.exe C:\\Python\Scripts\moveDLs.py

In order to make your script run continuously, you can use sched for event scheduling:

The sched module defines a class which implements a general purpose event scheduler

import sched
import time

event_schedule = sched.scheduler(time.time, time.sleep)

def do_something():
    print("Hello, World!")
    event_schedule.enter(30, 1, do_something, (sc,))

event_schedule.enter(30, 1, do_something, (s,))
event_schedule.run()

Now in order to kill a background process on Windows, you simply need to run:

taskkill /pid processId /f

Where processId is the ID of the process you want to kill.