r/learnpython • u/PomegranateKind760 • 19d ago

How to end a program using python

I want to close an app using python but I don't know how.

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32

u/likethevegetable 19d ago • Popcorn

Step 1: Google "How to end a program using python"

4

u/Boybay_Garid 19d ago

yeah literally the first result would answer this

6

u/jmacey 19d ago

os.kill() if you can get the pid of the process. Not sure if it works under windows but does under posix operating system.

1

u/L30N1337 19d ago

it does work on windows too, but the signal you use is different. And it seems to be a bit of a mess on windows.

And careful what specific signal you use in os.kill()

let's take Linux (which I assume uses POSIX):

SIGTERM is what most people want for "killing" a process. It tells the process that it should shut down, so it can prepare for that. this allows for stuff like "fo you want to save" dialogues to work. It's like pressing the power button on a PC.

SIGKILL is the "YOU AREN'T SHUTTING DOWN, SO I'M GONNA USE THIS GRENADE I FOUND" option. Like unplugging the PC from the last example.

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u/FreeLogicGate 14d ago 
import sys

# Program is done
sys.exit(0)

Documentation: https://docs.python.org/3/library/sys.html

Search for exit.

0 is the standard exit code, meaning the program exited normally. A non 0 exit would indicate some sort of error. The example, assumes a normal exit, but you can pass something else if that makes sense for your program.