title: if else in a list comprehension
body: <p>Given a list <code>xs</code>:</p>
  <pre><code>xs = [22, 13, 45, 50, 98, 69, 43, 44, 1]
  </code></pre>
  <p>For numbers above 45 inclusive, add 1; and for numbers less than 45, add 5.</p>