urls.py that allows different languages

urls.py

from django.conf.urls import url, include, patterns
from django.conf import settings
from django.conf.urls.static import static
from django.contrib import admin
from django.conf.urls.i18n import i18n_patterns
from django.utils.translation import ugettext_lazy as _

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^i18n/', include('django.conf.urls.i18n')),
    url(r'^', include('main_site.urls')),
]

urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

#urlpatterns += i18n_patterns(
#    url(r'^', include('main_site.urls')),
#)