How to increment a variable on a for loop in jinja template?

Question

I would like to do something like:

variable p is from test.py which is a list [\'a\',\'b\',\'c\',\'d\']

{% for i in p %}
{{variable++}}
{{variable}}
         


        

Answer 1

You could use loop.index:

{% for i in p %}
  {{ loop.index }}
{% endfor %}

Check the template designer documentation.

In more recent versions, due to scoping rules, the following would not work:

{% set count = 1 %}
{% for i in p %}
  {{ count }}
  {% set count = count + 1 %}
{% endfor %}