sys.exitfunc not working in python

Question

I am trying to run following simple code

import sys

print("Starting Test Python Module");

def testmethod():
    print("From test method")

sys.exitfunc = testmethod
print("Terminating Test Python Module");

and it prints

C:\Users\athakur\Softwares>python test.py
Starting Test Python Module
Terminating Test Python Module

I am not able to understand why it does not print "From Test method"

Using atexit works fine though

import atexit

print("Starting Test Python Module");

def testmethod():
    print("From test method")

atexit.register(testmethod)
print("Terminating Test Python Module");

Outputs

C:\Users\athakur\Softwares>python test.py
Starting Test Python Module
Terminating Test Python Module
From test method

score 6 · Answer 1 · answered Oct 02 '15 at 06:01

6

sys.exitfunc is deprecated since python2.4 and was removed in python3.

answered Oct 02 '15 at 06:01

Bakuriu

98,325
22
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score 3 · Accepted Answer · answered Oct 02 '15 at 06:01

3

sys.exitfunc does not exist in Python 3.x.

answered Oct 02 '15 at 06:01

Ignacio Vazquez-Abrams

776,304
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1,341
1,358

Yes I am using `Python 3.4.3`. So this would explain the behavior. But shouldn't python interpreter complaint about it? – Aniket Thakur Oct 02 '15 at 06:12
The protection against arbitrary attributes being added to objects of *types* defined in C apparently doesn't apply to modules. Should it? Possibly. – Ignacio Vazquez-Abrams Oct 02 '15 at 06:16
@AniketThakur No, you are simply setting an attribute `exitfunc` to `sys` module, there is nothing wrong about that. You can do `sys.blahblahblah = ` , and it would work ( as long as something is defined :-) , like it works for most other objects in python) . – Anand S Kumar Oct 02 '15 at 06:16

sys.exitfunc not working in python

2 Answers2