title: Creating my own "integer" object in Python
body: <p>Essentially I want to be able to do something like:</p>
  
  <pre><code>a = Integer(1)
  a += 1
  print a
  </code></pre>
  
  <p>And of course printing the number two as result. What methods do I need to create to get this behaviour in my Integer class?</p>
  
  <p>Disclaimer: I'm not planning to use this for "real", just curious.</p>