Building a list in Django templates

Question

With this code:

{% for o in [1,2,3] %}
    

        {% cycle \'row1\' \'row2\' %}
    
{% endf         


        

Answer 1

This maybe an inspiration. Use the buildin filter add.

{{ first|add:second }}

first is [1, 2, 3] and second is [4, 5, 6], then the output will be [1, 2, 3, 4, 5, 6].

This filter will first try to coerce both values to integers. 
If this fails, it'll attempt to add the values together anyway. 
This will work on some data types (strings, list, etc.) and fail on others. 
If it fails, the result will be an empty string.

The official specification,https://docs.djangoproject.com/zh-hans/2.0/ref/templates/builtins/#built-in-filter-reference