How can I check the size of a collection within a Django template?

Question

I have a list in my Django template. I want to do something only if the size of the list is greater than zero.

I have tried myList|length and m

Answer 1

A list is considered to be False if it has no elements, so you can do something like this:

{% if mylist %}
    
I have a list!
{% else %}
    
I don't have a list!
{% endif %}