How to allow a user a specified amount of time on a python program-CodePudding

Im pretty independent when using oython since i wouldnt consider myself a beginner etc, but Iv been coding up a program that I want to sell. The problem is that I want the program to have a timer on it and when it runs out the program will no longer work. Giving the user a specified amount of time they have to use the program.

CodePudding user response：

You will want to run your program from another program using multithreading or asynchronous stuff. If you are looking for a single thing to send to your program (here, an interruption signal), then you should take a look at the signal built in package (for CPython).

(based on this answer from another post)

CodePudding user response：

If you're calling external script using subprocess.Popen, you can just .kill() it after some time.

from subprocess import Popen
from time import sleep

with Popen(["python3", script_path]) as proc:
    sleep(1.0)
    proc.kill()

Reading documentation helps sometimes.

CodePudding user response：

One way this can be done by interrupting the main thread

from time import sleep
from threading import Thread
from _thread import interrupt_main
import sys

 
TIME_TO_WAIT = 10

def kill_main(time):
    sleep(time)
    interrupt_main()
 

thread = Thread(target=kill_main, args=(TIME_TO_WAIT,))
thread.start()

try:
    while True:
        print('Main code is running')
        sleep(0.5)
except KeyboardInterrupt:        print('Time is up!')
    sys.exit()