title: python appending a list to a tuple
body: <p>I have following tuple:</p>
  
  <pre><code>vertices = ([0,0],[0,0],[0,0]);
  </code></pre>
  
  <p>And on each loop I want to append the following list:</p>
  
  <pre><code>[x, y]
  </code></pre>
  
  <p>How should I approach it?</p>