Oct 23, 2025 · From the Jinja2 template designer documentation: {% if variable is defined %} value of variable: {{ variable }} {% else %} variable is not defined {% endif %}

Aug 5, 2012 · What does this "-" in jinja2 template engine do? Asked 13 years, 5 months ago Modified 3 years, 2 months ago Viewed 33k times

How do I get the number of elements in a list in jinja2 template? For example, in Python:

I would like to know how can I set a variable with another variable in Jinja. I have got a submenu and I would like to show which link is active. I tried this: {% set active_link = {{recordtype}} -...

Using Django templating engine I can include another partial template while setting a custom context using named arguments, like this: {% include "list.html" with articles=articles_list1 only …

I want to be able to output the current loop iteration to my template. According to the docs, there is a loop.counter variable that I am trying to use: <ul> {% for user in userlist %} <l...

Turns out that + and - are there for whitespace control purpose. You can manually disable the lstrip_blocks behavior by putting a plus sign (+) at the start of a block [...] You can also strip …

Aug 18, 2014 · I serve dynamic pages from Jinja2 templates in Flask. Now I am defining client-side templates in say, Jinja2-clone Nunjucks inside a script tag. Problem is, the client-side …

Is it possible to import a Python module into a Jinja template so I can use its functions? For example, I have a format.py file that contains methods for formatting dates and times. In a …

So I am new to Django and can use some help. I have used a for loop to display a list from my database. But I want to add an if statement such that, if the user input matches my database …