Fixed #27449 -- Added django.utils.translation.get_supported_language_variant().

2 files changed, 11 insertions, 0 deletions

diff --git a/django/utils/translation/__init__.py b/django/utils/translation/__init__.py
index 2600b85727..5c4a5e8c70 100644
--- a/django/utils/translation/__init__.py
+++ b/django/utils/translation/__init__.py
@@ -205,6 +205,10 @@ def get_language_from_path(path):
     return _trans.get_language_from_path(path)
 
 
+def get_supported_language_variant(lang_code, *, strict=False):
+    return _trans.get_supported_language_variant(lang_code, strict)
+
+
 def templatize(src, **kwargs):
     from .template import templatize
     return templatize(src, **kwargs)
diff --git a/django/utils/translation/trans_null.py b/django/utils/translation/trans_null.py
index 72af147351..3eb6910f04 100644
--- a/django/utils/translation/trans_null.py
+++ b/django/utils/translation/trans_null.py
@@ -66,3 +66,10 @@ def get_language_from_request(request, check_path=False):
 
 def get_language_from_path(request):
     return None
+
+
+def get_supported_language_variant(lang_code, strict=False):
+    if lang_code == settings.LANGUAGE_CODE:
+        return lang_code
+    else:
+        raise LookupError(lang_code)