TEMPLATE_LOADERS = (
    'yourproject.flags.loaders.filesystem.load_template_source',
    'yourproject.flags.loaders.app_directories.load_template_source',
    ...
)

add the local middleware after the session middleware:

MIDDLEWARE_CLASSES = (
    ...
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    ...
)

add the flags application:

INSTALLED_APPS = (
    ...
    'yourproject.flags',
)

add flags application parameters; you can choose flags icons server:

# see urls.py
FLAGS_I18N_PREFIX = '/lang/i18n/'
# flags served by local server
#FLAGS_URL = MEDIA_URL
# flags served by net server
FLAGS_URL = 'http://djangodev.free.fr/flags/'

# languages
ugettext = lambda s: s
LANGUAGES = (
    ('ar', ugettext('Arabic')),
    ('fr', ugettext('French')),
    ('en', ugettext('English')),
    ('es', ugettext('Spanish')),
    ('de', ugettext('German')),
    ('pl', ugettext('Polish')),
)

urls.py

include flags.urls (the prefix must match settings.FLAGS_I18N_PREFIX):

urlpatterns = patterns('',
    # django-flags for internationalization
    (r'^lang/', include('yourproject.flags.urls')),
    ...
)

templates

Insert the following code to generate the flags form:

{% load flags_lib %}{% flags_form %}

copy templates/.html to templates/LANG/.html
translate templates/LANG/.html

That's all.

Help needed

You can help me this way:

generate a 10x15 flag of your country named flag_CC.jpg
translate this template
send me these items

Thanks for your participation :-)