It will help for change URL in available languages in Django templates

from django import template
from django.core.urlresolvers import resolve, reverse, Resolver404
from django.utils.translation import get_language, activate

register = template.Library()
@register.simple_tag(takes_context=True)
def change_lang(context, lang=None, *args, **kwargs):
    """
    Get active page's url by a specified language
    Usage: {% change_lang 'en' %}
    """
    path = context['request'].path
    full_path = context['request'].get_full_path()
    try:
        url_parts = resolve(path)
        cur_language = get_language()
        try:
            activate(lang)
            url = reverse(url_parts.view_name, kwargs=url_parts.kwargs)
            activate(cur_language)
            parameters = "?{0}".format(full_path.split('?')[1]) if len(full_path.split('?')) == 2 else ""
            return "{0}{1}".format(url, parameters)
        except Exception:
            pass
    except Resolver404:
        pass
    return full_path

{% load <filename> %}
{% get_language_info_list for LANGUAGES as languages %}
{% for language in languages %}
     <a href="{% change_lang language.code %}">
         {{ language.name_local }}
     </a>
{% endfor %}