title: Python Operator (+=) and SyntaxError
body: <p>Ok, what am I doing wrong?</p>
  
  <pre><code>x = 1
  
  print x += 1
  </code></pre>
  
  <p>Error:</p>
  
  <pre><code>print x += 1
           ^
  SyntaxError: invalid syntax
  </code></pre>
  
  <p>Or, does <code>+=</code> not work in Python 2.7 anymore? I would swear that I have used it in the past.</p>