Update app.py

app.py

@@ -17,6 +17,11 @@ import re
 from IndicTransToolkit import IndicProcessor
 import torch
 import torch
+from lang_list import (
+    LANGUAGE_NAME_TO_CODE,
+    T2TT_TARGET_LANGUAGE_NAMES,
+    TEXT_SOURCE_LANGUAGE_NAMES,
+)
 
 logging.set_verbosity_error()