Update app.py

app.py

@@ -79,7 +79,8 @@ def set_default_target():
 
 def translate(source, source_language, target_language):
     if source_language == target_language:
-        return source
+        yield source.strip()
+        return source.strip()
 
     source = [s.strip() for s in source.split('\n')]
     source_subwords = tokenizer(source).input_ids