Jinja2 round filter not rounding

Question

I have the following code in my template:

data: [{% for deet in deets %} {{ deet.value*100|round(1) }}{% if not loop.last %},{% endif %} {% endfor %}]

I am expecting data rounded to 1 decimal place. However, when I view the page or source, this is the output I'm getting:

data: [ 44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818,  44.2765833818 ]

This is not rounded to 1 decimal place. It runs without a template error or anything, but produces incorrect output. My understanding from the documentation, and even a related stack overflow question, are that my format should work. What am I missing or doing wrong?

Answer 1

You can put parens around the value that you want to round. (This works for division as well, contrary to what @sobri wrote.)

{{ (deet.value/100)|round }}

NOTE: round returns a float so if you really want the int you have to pass the value through that filter as well.

{{ (deet.value/100)|round|int }}