django i18n in mac

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First, install gettext

brew install gettext
brew link gettext --force
Add "locale" folder in your project root or app root. In settings.py Add to MIDDLEWEAR_CLASSES, locale, it enables language selection based on request: 'django.middleware.locale.LocaleMiddleware', Add LOCALE_PATHS, this is where your translation files will be stored: 
LOCALE_PATHS = (
    os.path.join(PROJECT_PATH, 'locale/'),
)

In your template,

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{% load i18n %}
{% trans "XXX" %}

In command line,
django-admin makemessages -l zh-hant
django-admin.py compilemessages -l zh-hant

In urls.py

from django.conf.urls import include, url
from django.conf.urls.i18n import i18n_patterns
from django.contrib import admin

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

urlpatterns += i18n_patterns(
    url(r'^$', 'home.views.index'),
)

Reference:
http://missions5.blogspot.tw/2015/03/django-1.html
http://blog.blackwhite.tw/2013/04/django-i18n.html
http://stackoverflow.com/questions/10280881/django-site-with-2-languages