Update atexit.py

linux:~> atexit.py                                                                                                                                                                                                     
Python is not only a reptile                                                                                                                                                                                    
Exception caught : SystemExit(1) : Request to exit from the interpreter.                                                                                                                                        
-------------------------------                                                                                                                                                                                 

Python interpreter is exiting.
-------------------------------

>>> exitfunc1: Following is the state of 'context'

('count', 1)
('status', ['SystemExit', 'OK'])
('message', 'Python is also a language')

>>> exitfunc2: None

Bye bye

linux:~> echo $?
1