在模板的for循环中迭代数字

Django提供了它。你可以使用任何一种:

• \{\{ forloop.counter }}索引从1开始。
• \{\{ forloop.counter0 }}索引从0开始。

在模板中，你可以这样做:

{% for item in item_list %}
\{\{ forloop.counter }} # starting index 1
\{\{ forloop.counter0 }} # starting index 0


# do your stuff
{% endfor %}

更多信息在:内置模板标签和过滤器| Django文档

你也可以用这个:

{% if forloop.first %}

或

{% if forloop.last %}

[Django HTML模板现在不支持索引]，但是你可以达到这个目标:

如果在views.py的Dictionary中使用字典，则可以使用key作为索引进行迭代。例子:

{% for key, value in DictionartResult.items %} <!-- dictionartResult is a dictionary having key value pair-->
<tr align="center">
<td  bgcolor="Blue"><a href=\{\{value.ProjectName}}><b>\{\{value.ProjectName}}</b></a></td>
<td> \{\{ value.atIndex0 }} </td>         <!-- atIndex0 is a key which will have its value , you can treat this key as index to resolve-->
<td> \{\{ value.atIndex4 }} </td>
<td> \{\{ value.atIndex2 }} </td>
</tr>
{% endfor %}

如果在字典中使用列表，那么不仅可以控制第一次和最后一次迭代，而且可以控制所有索引。例子:

{% for key, value in DictionaryResult.items %}
<tr align="center">
{% for project_data in value %}
{% if  forloop.counter <= 13 %}  <!-- Here you can control the iteration-->
{% if forloop.first %}
<td bgcolor="Blue"><a href=\{\{project_data}}><b> \{\{ project_data }} </b></a></td> <!-- it will always refer to project_data[0]-->
{% else %}
<td> \{\{ project_data }} </td> <!-- it will refer to all items in project_data[] except at index [0]-->
{% endif %}
{% endif %}
{% endfor %}
</tr>
{% endfor %}

结束If;)

我认为你可以调用id，像这样

{% for days in days_list %}
<h2># Day \{\{ days.id }} - From \{\{ days.from_location }} to \{\{ days.to_location }}</h2>
{% endfor %}

{% for days in days_list %}
<h2># Day \{\{ forloop.counter }} - From \{\{ days.from_location }} to \{\{ days.to_location }}</h2>
{% endfor %}

或者你想从0开始

{% for days in days_list %}
<h2># Day \{\{ forloop.counter0 }} - From \{\{ days.from_location }} to \{\{ days.to_location }}</h2>
{% endfor %}

从文档https://docs.djangoproject.com/en/stable/ref/templates/builtins/#for 你可以使用

{% for job in jobs %}
<td>\{\{ forloop.counter }}</td>
<td>\{\{ job.title }}</td>
<td>\{\{ job.job_url }}</td>
{% endfor %}

• \{\{ forloop.counter }}从1开始计数
• \{\{ forloop.counter0 }}从0开始计数

这样做，

{% for days in days_list %}
<h2># Day \{\{ forloop.counter }} - From \{\{ days.from_location }} to \{\{ days.to_location }}</h2>
{% endfor %}