Question

What is the difference between doing:

{% if my_var not in my_list %}
  {{ my_var }}
{% endif %}

and

{% if not my_var in my_list %}
  {{ my_var }}
{% endif %}

when my_list is None and my_var is "1" in templates? In the first case {{my_var}} doesn’t get printed, but it does in the second.

Answer 1

Since my_list isn’t a container at all, both comparisons return false. The difference is that the second turns the false into a true and prints my_var.