A set of simple math filters for Django
Project description
django-mathfilters is a Python 3 module that provides different simple math filters for Django.
Django provides an add template filter, but no corresponding subtracting, multiplying or dividing filters.
Django ticket #361 has been closed as wontfix, so I had to create an alternative that is easy to install in a new Django project.
It currently supports int, float and Decimal types, or any other type that can be converted to int or float.
Installation
$ pip install django-mathfilters
Then add mathfilters to your INSTALLED_APPS.
Usage
You need to load mathfilters at the top of your template. The script provides the following filters:
sub – subtraction
mul – multiplication
div – division
intdiv – integer (floor) division
abs – absolute value
mod – modulo
addition – replacement for the add filter with support for float / decimal types
Example:
{% load mathfilters %}
...
<h1>Basic math filters</h1>
<ul>
<li>8 + 3 = {{ 8|add:3 }}</li>
<li>13 - 17 = {{ 13|sub:17 }}</li>
{% with answer=42 %}
<li>42 * 0.5 = {{ answer|mul:0.5 }}</li>
{% endwith %}
{% with numerator=12 denominator=3 %}
<li>12 / 3 = {{ numerator|div:denominator }}</li>
{% endwith %}
<li>|-13| = {{ -13|abs }}</li>
</ul>Version Support
This module officially supports Python 3.5+ as well as PyPy3. Support for Python 3.3 and 3.4 is provided on best-effort basis, but there are no CI tests for it.
Supported Django versions are 1.11+, 2.x and 3.x.
License
MIT License, see LICENSE file.
