title: Are the elements of tuples, themselves tuples?
body: <p>I'm slightly confused over tuple notation. Is each of the elements in a tuple treated as a tuple or as whatever type that element is?</p>
  
  <p>For example, for the tuple <code>t = (1,2,3,4)</code>, <code>1 in t</code> is <code>True</code>, which means that the int <code>1</code> is in the tuple <code>t</code>.</p>
  
  <p>However, if I evaluate <code>t[0:1]</code>, we get the <strong>tuple</strong> <code>(1,)</code>.</p>
  
  <p>Even more confusing is the fact that <code>(1,) in t</code> is <code>False</code>.</p>
  
  <p>What's going on here? Which is it; are the elements of <code>t</code> tuples or integers?</p>