Currency-filter for Django's template engine

currency-filter.py

from django import template
from django.conf import settings
from django.template.defaultfilters import floatformat
register = template.Library()

"""
This little code assumes, that you have a setting named CURRENCY with a value like 'EUR' or 'USD' or u'€'
"""
@register.filter
def currency(value):
    if value is None:
        value = 0
    return '%s %s' % (floatformat(value, 2), settings.CURRENCY)