title: Is it possible for argparse's --help to show my exit statuses?
body: <p>I have a utility that is written in Python and is meant to be used on its own or in conjunction with other shell utilities. As such, my utility exits with status codes (e.g. <code>0</code> if everything is fine, <code>1</code> when an input file or output directory doesn't exist, etc.).</p>
  
  <p>My question: I'm using <a href="http://docs.python.org/library/argparse.html" rel="nofollow">argparse module</a> and it works great, not only for parsing options but for generating help. However, I'd like to be able to add some info about my exit statuses to the help as well. Is this possible with argparse; am I missing something?</p>