What is difference between sys.exit(0) and os._exit(0)

Question

Please help me in clarifying the concept of these two python statements in terms of difference in functionality:

1. sys.exit(0)

Answer 1

os._exit calls the C function _exit() which does an immediate program termination. Note the statement "can never return".

sys.exit() is identical to raise SystemExit(). It raises a Python exception which may be caught by the caller.

Original post: http://bytes.com/topic/python/answers/156121-os-_exit-vs-sys-exit