translationstring

import gettext from translationstring import TranslationString, TranslationStringFactory, Translator # 1. Create a mock translations object (e.g., from gettext or Babel) # In a real app, this would load .mo files for a specific locale. class MockTranslations(gettext.NullTranslations): def ugettext(self, message): # Simulate a translation, for demo just uppercase it if in 'app' domain # In a real scenario, this would look up in a catalog. if self.domain == 'app' and message == 'Hello': return 'Bonjour' return message def ungettext(self, singular, plural, n): if self.domain == 'app' and singular == '${num} item': if n == 1: return '${num} article' else: return '${num} articles' return super().ungettext(singular, plural, n) mock_translations = MockTranslations() mock_translations.add_domain('app') mock_translations.set_output_charset('utf-8') # 2. Create a Translator callable from the translations object translator_callable = Translator(mock_translations) # 3. Use TranslationString for individual strings ts_hello = TranslationString('Hello', domain='app') ts_item_plural = TranslationString('${num} item', plural='${num} items', mapping={'num': 1}, domain='app') ts_item_plural_many = TranslationString('${num} item', plural='${num} items', mapping={'num': 5}, domain='app') print(f"Raw TranslationString (no explicit translation): {ts_hello}") print(f"Translated via callable: {transl_hello = translator_callable(ts_hello)}") print(f"Plural translated (1 item): {transl_plural_1 = translator_callable(ts_item_plural, n=1)}") print(f"Plural translated (5 items): {transl_plural_5 = translator_callable(ts_item_plural_many, n=5)}") # 4. Use TranslationStringFactory for domain-prefixed strings (common convention is to assign to '_') _ = TranslationStringFactory('app') ts_factory_example = _('Welcome', default='Welcome to our application!') print(f"Factory string (no translation in mock): {transl_welcome = translator_callable(ts_factory_example)}") # Demonstrate interpolation ts_interp = TranslationString('Hello ${name}', mapping={'name': 'World'}) print(f"Interpolated string: {transl_interp = translator_callable(ts_interp)}")