Update app.py

app.py

@@ -92,6 +92,13 @@ if lang is not None:
   if obsolete_codes:
     st.write(f"Obsolete codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{t_variant}:")
     st.write(obsolete_codes)
+  else:
+    obsolete_codes = pull_obsolete_codes(b_variant)
+      if obsolete_codes:
+        st.write(f"Obsolete codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{b_variant}:")
+        st.write(obsolete_codes)
+    
+