How to terminate a Python script

Question

I am aware of the die() command in PHP which exits a script early.

How can I do this in Python?

Answer 1

I'm a total novice but surely this is cleaner and more controlled

def main():
    try:
        Answer = 1/0
        print  Answer
    except:
        print 'Program terminated'
        return
    print 'You wont see this'

if __name__ == '__main__': 
    main()

...

Program terminated

than

import sys
def main():
    try:
        Answer = 1/0
        print  Answer
    except:
        print 'Program terminated'
        sys.exit()
    print 'You wont see this'

if __name__ == '__main__': 
    main()

...

Program terminated Traceback (most recent call last): File "Z:\Directory\testdieprogram.py", line 12, in main() File "Z:\Directory\testdieprogram.py", line 8, in main sys.exit() SystemExit

Edit

The point being that the program ends smoothly and peacefully, rather than "I'VE STOPPED !!!!"