Update app.py

app.py

@@ -38,7 +38,7 @@ def get_lang_description_from_mapping_name(string_to_check):
       description = description + " (reduced)"    
   return description
 
-
+@st.cache
 def get_valid_epitran_mappings_list():
   map_path = Path(epitran.__path__[0]) / "data" / "map"
   map_files = map_path.glob("*.*")