Rewriting code to not put URLs in dropdown, but yes put in description after selection

app.py

@@ -8,26 +8,19 @@ from collections import defaultdict
 # TODO: reverse transliterate? 
 
 
-
-def get_lang_description_from_mapping_name(string_to_check):  
+@st.cache
+def get_lang_description_from_mapping_name(string_to_check, add_iso_url=False):  
+  description = None
   if "generic-Latn" == string_to_check: 
-    return "Generic Latin Script"
-    
-  if len(string_to_check)<2:
-    return None       
-
-  substrings = string_to_check.split("-")
-  substrings = substrings[:2] # first two are ISO 639-3 language, and ISO 15924 script
-  string_to_check = "-".join(substrings)
+    return "Generic Latin Script text"   
   
 
 
-  description = None
-  lang = langcodes.get(string_to_check)
+  lang = get_langcode_lang(string_to_check)
   if lang: 
     items = []
     for key, value in lang.describe().items():
-      if key == "language":
+      if key == "language" and add_iso_url:
         iso_code = lang.to_alpha3()
         value = f"[{value}](https://iso639-3.sil.org/code/{iso_code})"
       items.append(f"{key}: {value}")
@@ -38,6 +31,22 @@ def get_lang_description_from_mapping_name(string_to_check):
       description = description + " (reduced)"    
   return description
 
+
+@st.cache
+def get_langcode_lang_from_mapping_name(string_to_check):  
+    
+  if len(string_to_check)<2:
+    return None       
+
+  substrings = string_to_check.split("-")
+  iso_lang_and_iso_script = substrings[:2] # first two are ISO 639-3 language, and ISO 15924 script
+  string_to_check = "-".join(iso_lang_and_iso_script )
+  lang = langcodes.get(string_to_check)
+  return lang
+  
+
+
+
 @st.cache
 def get_valid_epitran_mappings_list():
   map_path = Path(epitran.__path__[0]) / "data" / "map"
@@ -84,10 +93,11 @@ if __name__ == "__main__":
   selected_mapping = st.selectbox("Select input language/script:", 
                                   valid_epitran_mappings, 
                                   index=index_of_desired_default, 
-                                  format_func=get_lang_description_from_mapping_name)
+                                  format_func=get_lang_description_from_mapping_name,
+                                  )
 
   
-  description = get_lang_description_from_mapping_name(selected_mapping)
+  description = get_lang_description_from_mapping_name(selected_mapping, add_iso_url=True)
   st.write(f"Selected input language/script: {description}")
     
   st.info("attempting to instantiate epitran transliterator for your language/script")