Is it possible to sort a list by length in Jinja2?

Question

我想按长度对列表进行排序，但是我不确定Jinja2是否可以：

{% for item in item_list | sort(length) %}

Answer 1

If item is your custom class, you can override __lt__ and you'll be able to sort directly with the sort filter. Since Jinja 2.6, you have a length attribute on your item, you can do so with sort(attribute='length') . Taken from the Jinja2 sort filter documentation