Always provide a translated name

generate.py

@@ -84,7 +84,9 @@ def get_project_data(
         core_change,
         change,
         built,
-        translated_name=languages_built.get(language.code, ''),
+        translated_name=languages_built.get(language.code)
+        or translated_names.babel_autonym(language.code)
+        or '',
         contribution_link=contribute.get_contrib_link(language.code, repo),
     )
 

requirements.txt

@@ -1,3 +1,4 @@
+babel
 gitpython
 urllib3
 potodo

tests/test_translated_names.py

@@ -20,10 +20,13 @@ def test_get_languages(self):
         self.assertIn('pl', result)
         self.assertIn('zh-cn', result)
 
-        self.assertEqual(result.get('en'), None)
         self.assertEqual(result.get('pl'), 'polski')
         self.assertEqual(result.get('zh-cn'), '简体中文')
 
+    def test_babel_autonym(self):
+        self.assertEqual(translated_names.babel_autonym('en'), 'English')
+        self.assertEqual(translated_names.babel_autonym('ga'), 'Gaeilge')
+
 
 if __name__ == '__main__':
     unittest.main()

translated_names.py

@@ -1,16 +1,25 @@
-"""
-Fetch translated names of languages.
-
-Yield a tuple of language code and a string with the translated name.
-"""
-
 import tomllib
 from collections.abc import Iterator
 
+from babel import Locale
+from babel.core import UnknownLocaleError
 from urllib3 import PoolManager
 
 
+def babel_autonym(code: str) -> str | None:
+    """Get the translated name for a language code with Babel"""
+    try:
+        locale = Locale.parse(code.replace('-', '_'))
+        return locale.get_display_name(locale)
+    except (UnknownLocaleError, ValueError):
+        return None
+
+
 def get_languages(http: PoolManager) -> Iterator[tuple[str, str]]:
+    """
+    Fetch languages built through docsbuild-scripts.
+    Yields language codes and translated language names.
+    """
     data = http.request(
         'GET',
         'https://raw.githubusercontent.com/python/docsbuild-scripts/refs/heads/main/config.toml',