python exception handling
<p>In the below python the message RSU is not supported on single node machine** is not getting printed. can anyone help please??</p>

<pre><code>#! /usr/bin/env python

import sys

class SWMException(Exception):
    def __init__(self, arg):
        print "inside exception"
        Exception.__init__(self, arg)

class RSUNotSupported(SWMException):
    def __init__(self):
        SWMException.__init__(self, "**RSU is not supported on single node machine**")

def isPrepActionNeeded():
    if 1==1:
        raise RSUNotSupported()
try:
    isPrepActionNeeded()
except:
    sys.exit(1)
</code></pre>
