python and %s
<p>What does %s mean in python? And does this bit of code translate to?</p>

<p>for instance... </p>

<pre><code> if len(sys.argv) &lt; 2:
     sys.exit('Usage: %s database-name' % sys.argv[0])

 if not os.path.exists(sys.argv[1]):
     sys.exit('ERROR: Database %s was not found!' % sys.argv[1])
</code></pre>

<p>Thanks</p>
