While message catalogs allow you to localize any messages in your application, there are a number of strings that are used in many applications for which translations are readily available.
Imagine for example you have a list of countries that users can choose from, and you’d like to display the names of those countries in the language the user prefers. Instead of translating all those country names yourself in your application, you can make use of the translations provided by the locale data included with Babel, which is based on the Common Locale Data Repository (CLDR) developed and maintained by the Unicode Consortium.
You normally access such locale data through the
Locale class provided by Babel:
>>> from babel import Locale >>> locale = Locale('en', 'US') >>> locale.territories['US'] u'United States' >>> locale = Locale('es', 'MX') >>> locale.territories['US'] u'Estados Unidos'
In addition to country/territory names, the locale data also provides access to names of languages, scripts, variants, time zones, and more. Some of the data is closely related to number and date formatting.
Most of the corresponding
Locale properties return dictionaries, where the
key is a code such as the ISO country and language codes. Consult the API
documentation for references to the relevant specifications.
Locale Display Names¶
Locales itself can be used to describe the locale itself or other locales. This mainly means that given a locale object you can ask it for its canonical display name, the name of the language and other things. Since the locales cross-reference each other you can ask for locale names in any language supported by the CLDR:
>>> l = Locale.parse('de_DE') >>> l.get_display_name('en_US') u'German (Germany)' >>> l.get_display_name('fr_FR') u'allemand (Allemagne)'
Display names include all the information to uniquely identify a locale (language, territory, script and variant) which is often not what you want. You can also ask for the information in parts:
>>> l.get_language_name('de_DE') u'Deutsch' >>> l.get_language_name('it_IT') u'tedesco' >>> l.get_territory_name('it_IT') u'Germania' >>> l.get_territory_name('pt_PT') u'Alemanha'
Calendar Display Names¶
Locale class provides access to many locale
display names related to calendar display, such as the names of weekdays
These display names are of course used for date formatting, but can also be used, for example, to show a list of months to the user in their preferred language:
>>> locale = Locale('es') >>> month_names = locale.months['format']['wide'].items() >>> for idx, name in sorted(month_names): ... print name enero febrero marzo abril mayo junio julio agosto septiembre octubre noviembre diciembre