title: Does python have an EXIT_SUCCESS constant?
body: <p>I'm returning <code>0</code> all over the place in a python script but would prefer something more semantic, something more readable.  I don't like that magic number.  Is there an idea in python similar to how in <code>C</code> you can return <code>EXIT_SUCCESS</code> instead of just 0?</p>
  
  <p>I was unable to find it here:
  <a href="https://docs.python.org/3.5/library/errno.html" rel="noreferrer">https://docs.python.org/3.5/library/errno.html</a></p>