title: What does this mean exit (main())
body: <p>I have seen this in a couple of python script I have been reading lately. I have looked at the doc; they only give examples deal with passing a termination value or string of some sort. </p>
  
  <p>I think what this does is call the main method, then exit? </p>
  
  <p>If someone could shed some light on this I would appreciate it. </p>
  
  <pre><code>if __name__ == "__main__":
     exit (main())
  </code></pre>
  
  <p>Please and thank you</p>