Format numbers in django templates

Question

I\'m trying to format numbers. Examples:

1     => 1
12    => 12
123   => 123
1234  => 1,234
12345 => 12,345

It strikes as a

Answer 1

Slightly off topic:

I found this question while looking for a way to format a number as currency, like so:

$100
($50)  # negative numbers without '-' and in parens

I ended up doing:

{% if   var >= 0 %} ${{ var|stringformat:"d" }}
{% elif var <  0 %} $({{ var|stringformat:"d"|cut:"-" }})
{% endif %}

You could also do, e.g. {{ var|stringformat:"1.2f"|cut:"-" }} to display as $50.00 (with 2 decimal places if that's what you want.

Perhaps slightly on the hacky side, but maybe someone else will find it useful.

Answer 2

Be aware that changing locale is process-wide and not thread safe (iow., can have side effects or can affect other code executed within the same process).

My proposition: check out the Babel package. Some means of integrating with Django templates are available.

Answer 3

The humanize solution is fine if your website is in English. For other languages, you need another solution: I recommend using Babel. One solution is to create a custom template tag to display numbers properly. Here's how: just create the following file in your_project/your_app/templatetags/sexify.py:

# -*- coding: utf-8 -*-
from django import template
from django.utils.translation import to_locale, get_language
from babel.numbers import format_number

register = template.Library()

def sexy_number(context, number, locale = None):
    if locale is None:
        locale = to_locale(get_language())
    return format_number(number, locale = locale)

register.simple_tag(takes_context=True)(sexy_number)

Then you can use this template tag in your templates like this:

{% load sexy_number from sexify %}

{% sexy_number 1234.56 %}

• For an american user (locale en_US) this displays 1,234.56.
• For a french user (locale fr_FR), this displays 1 234,56.
• ...

Of course you can use variables instead:

{% sexy_number some_variable %}

Note: the context parameter is currently not used in my example, but I put it there to show that you can easily tweak this template tag to make it use anything that's in the template context.

Answer 4

Django's contributed humanize application does this:

{% load humanize %}
{{ my_num|intcomma }}

Be sure to add 'django.contrib.humanize' to your INSTALLED_APPS list in the settings.py file.

Answer 5

Building on other answers, to extend this to floats, you can do:

{% load humanize %}
{{ floatvalue|floatformat:2|intcomma }}

Documentation: floatformat, intcomma.

Answer 6

In case someone stumbles upon this, in Django 2.0.2 you can use this

Thousand separator. Be sure to read format localization as well.