title: Python unsubscriptable
body: <p>What does <code>unsubscriptable</code> mean in the context of a TypeError as in:</p>
  
  <pre><code>TypeError: 'int' object is unsubscriptable
  </code></pre>
  
  <p>EDIT:
  Short code example that results in this phenomena.</p>
  
  <pre><code>a=[[1,2],[5,3],5,[5,6],[2,2]]
  for b in a:
      print b[0]
  
  &gt; 1
  &gt; 5
  &gt; TypeError: 'int' object is unsubscriptable
  </code></pre>