Update app.py

app.py

@@ -1,3 +1,4 @@
+
 import streamlit as st
 import pandas as pd
 
@@ -5,6 +6,7 @@ astations = [
 	["hongkongobservatory","HKO",22.3022566,114.1722662,"Hong Kong Observatory"],
 	["kingspark","KP",22.3115408,114.1685675,"Observatory Meteorological Station, King's Park"],
 ]
+astationcolumns = ['akey','astationcode','alatitude','alongitude','atitle',]
 
 acontainer1 = st.empty()
 acontainer2 = st.empty()
@@ -13,11 +15,12 @@ def aoptionchange(aparam):
 	acontainer2.write(aparam)
 adf = pd.DataFrame(
 	astations,
-	columns=['akey','astationcode','alatitude','alongitude','atitle',]
+	columns=astationcolumns
 )
 aoption = acontainer1.selectbox(
 	'Which station?',
 	adf['atitle'],
 	on_change=aoptionchange,
-	args={'aselectedindex':index,}
-)
+	args={'aselected':aoption,}
+)
+#acontainer2.write(aoption)