Update app.py

app.py

@@ -2,10 +2,14 @@ import streamlit as st
 import epitran
 
 if __name__ == "__main__":
-  iso_lang_code = st.text_input("Three-letter [ISO-639-3](https://iso639-3.sil.org/) language code", val="swa")
-  st.write(f'iso code is {iso_lang_code }')
+  iso_lang_code = st.text_input(
+    label="Three-letter [ISO-639-3](https://iso639-3.sil.org/) language code", 
+    value="swa"
+    )
+  st.write(f"iso code is {iso_lang_code}")
   
-  iso_script_code = st.text_input("[ISO 15924](https://unicode.org/iso15924/iso15924-codes.html) script code, e.g. 'Latn' for Latin script, 'Hans' for Chinese script, etc.", val="Latn")
+  iso_script_code = st.text_input(
+    label="[ISO 15924](https://unicode.org/iso15924/iso15924-codes.html) script code, e.g. 'Latn' for Latin script, 'Hans' for Chinese script, etc.", value="Latn")
   st.write(f'iso code is {iso_script_code }')