Update atexit.py

linux:~> atexit.py                                                                                                                                                                                                     
Python is not only a reptile                                                                                                                                                                                    
Exception caught
1
exitfunc1: Python interpreter is exiting..
('count', 1)
('status', ['SystemExit', 'OK'])
('message', 'Python is also a language')

linux:~> echo $?
1