title: Nested loop on a list with a function
body: <p>I got stuck on that:</p>
  <ul>
  <li>a list <code>y = (1,2,3...)</code></li>
  <li>a function <code>func(A,B)</code></li>
  <li>a constant <code>C</code></li>
  </ul>
  <p>How can I express this situation with loops?</p>
  <pre><code>B1 = func(C , y[0])
  B2 = func(B1 , y[1])
  B3 = func(B2 , y[2]) #.... and so on.
  </code></pre>