Update app.py

app.py

@@ -7,15 +7,16 @@ langtext = st.text_input("language lookup using https://github.com/rspeer/langco
 st.write("Checking whether the tag is valid. That is, the language, script, territory, and variants (if present) are all tags that have meanings assigned by IANA.")
 
 if langcodes.tag_is_valid(langtext):
-  st.write(f"...True! {langtext} parses meaningfully as a language tag according to IANA.")
+  st.write(f"...True! '{langtext}' parses meaningfully as a language tag according to IANA.")
 else:
-  st.write(f"...False! {langtext} doesn't parse meaningfully as a language tag according to IANA, some of its subcomponents may be invalid or it might be a natural language description.")
+  st.write(f"...False! '{langtext}' doesn't parse meaningfully as a language tag according to IANA, some of its subcomponents may be invalid or it might be a natural language description.")
     
 
 try:
   lang = langcodes.Language.get(langtext)
 #  st.write(f"{lang} is the BCP-47 tag.")
   if "unknown" in lang.display_name().lower():
+    
     lang = None
 except langcodes.LanguageTagError as e: 
   st.write(f"Could not simply instantiate, trying to look up instead.")
@@ -37,9 +38,12 @@ if lang is None:
 if lang is not None: 
   display = lang.display_name()
 
-  st.write(f"BCP-47 tag for {langtext}, according to the langcodes library: {lang}")  
+  st.write(f"Best-match BCP-47 tag for '{langtext}', according to the langcodes library: {lang}")  
   st.write(f"Breakdown of tag components: {lang.describe()}")  
   st.write(f"Display name for {lang}: {lang.display_name()}")
   st.write(f"Autonym for {lang}: {lang.autonym()}")
-  st.write(f"Alpha3 version (deprecated): {lang.to_alpha3()}")
+  b_variant = lang.to_alpha3(variant='B')
+  t_variant = lang.to_alpha3(variant='T')
+  st.write(f"ISO 639-3 'alpha3' code, 'terminology' variant (deprecated): {t_variant}")
+  st.write(f"ISO 639-3 'alpha3' code, 'bibliographic' variant (deprecated): {b_variant}")
   st.write(f"Correct, standardized, BCP-47 tag for {langtext}, according to the langcodes library: {langcodes.standardize_tag(lang)}")