Fix Python – Doing something before program exit


Asked By – RacecaR

How can you have a function or something that will be executed before your program quits? I have a script that will be constantly running in the background, and I need it to save some data to a file before it exits. Is there a standard way of doing this?

Now we will see solution for issue: Doing something before program exit


Check out the atexit module:

For example, if I wanted to print a message when my application was terminating:

import atexit

def exit_handler():
    print 'My application is ending!'


Just be aware that this works great for normal termination of the script, but it won’t get called in all cases (e.g. fatal internal errors).

This question is answered By – Brent Writes Code

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