  <h2>Tag List</h2>
  {% if tag_list %}
  <ul>
    {% for tag in tag_list %}
      <li>
        <a href="">
          {{ tag.name|title }}</a>
      </li>
    {% endfor %}
  </ul>
  {% else %}
    <p><em>There are currently no Tags available.</em></p>
  {% endif %}

  <h2>Tag List</h2>
  <ul>
    {% for tag in tag_list %}
      <li>
        <a href="">
          {{ tag.name|title }}</a>
      </li>
    {% empty %}
      <li><em>There are currently no Tags available.</em></li>
    {% endfor %}
  </ul>

Use empty tag in Tag list template.
Ch04: Use empty tag in Tag list template.
