    illegible. As such, do not use generator expressions for complex
          expressions.</p>

        <blockquote>
          <p>Bad</p>
        </blockquote>

        <pre><code>L = [x + y + z for x in nums if x &gt; 10 for y in nums2 for z in nums3 if y &gt; z]</code></pre>

        <p>Use your best judgement.</p>
      </div>

      <div class='col-md-3 sticky'>
        <nav class='hidden-print hidden-sm hidden-xs sidebar'>
          <ul>
            <li><a href="#overview">Overview</a></li>
          