Update app.py

app.py

@@ -31,8 +31,25 @@ df = pd.read_csv("city_temperature.csv")
 city_input = st.selectbox(
      'Which region do you want to predict temparature ?',
      ("all",
-     "test",
-     "E"), index=0)
+     df["Region"].unique()), index=0)
+
+city_input = st.selectbox(
+     'Which region do you want to predict temparature ?',
+     ("all",
+     df["Region"].drop_duplicates()), index=0)
+
+test = df["Region"].unique()
+test2 = df["Region"].drop_duplicates()
+
+city_input = st.selectbox(
+     'Which region do you want to predict temparature ?',
+     ("all",
+     test), index=0)
+
+city_input = st.selectbox(
+     'Which region do you want to predict temparature ?',
+     ("all",
+     test2), index=0)
 
 def mergeStateToCountry():
     df.loc[df['State'].notna(), 'Country'] = df['State']