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For Loop and Loop Variable in Templates

<!-- items_list.html -->
{% for item in items %}
    <tr class="{% if forloop.first %}first{% endif %} {% if forloop.last %}last{% endif %}">
        <td>{{ forloop.counter }}</td>
        <td>{{ item.name }}</td>
        <td>{{ forloop.revcounter }}</td>
    </tr>
{% empty %}
    <tr><td colspan="3">No items found</td></tr>
{% endfor %}
  1. forloop.counter starts at 0; use forloop.counter0 for 1-indexed counting.

  2. forloop.counter starts at 1, forloop.revcounter counts backwards, and {% empty %} handles empty iterables.

  3. The forloop variable is only available in block tags, not in simple for loops.

  4. {% empty %} is equivalent to {% if not items %} and must be used with else block.

Show answer & explanation

Correct answer

forloop.counter starts at 1, forloop.revcounter counts backwards, and {% empty %} handles empty iterables.

Explanation

The forloop variable provides metadata: counter (1-indexed), revcounter (reverse counter), first/last (boolean), and others. The {% empty %} block executes when the iterable is empty. These variables are automatically available within the loop scope.

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