Update app.py

app.py

@@ -44,8 +44,8 @@ data = create_data()
 unique_cities = data['City'].unique()
 
 # Creating tabs for each city
-tab_dict = {city: st.tab(city) for city in unique_cities}
-for city, tab in tab_dict.items():
+tabs = st.tabs(unique_cities)
+for tab, city in zip(tabs, unique_cities):
     with tab:
         # Sliders for parameter adjustment, using session state values as defaults
         trend = st.select_slider('Select Trend', options=['add', 'mul', None], value=st.session_state.best_params['trend'])
@@ -91,4 +91,4 @@ for city, tab in tab_dict.items():
         if st.button(f'Export {city} to Excel'):
             df_to_export = forecast_df
             excel_data = to_excel(df_to_export)
-            st.download_button(label='📥 Download Excel', data=excel_data, file_name=f'{city}_forecast.xlsx', mime='application/vnd.ms-excel')
+            st.download_button(label='📥 Download Excel', data=excel_data, file_name=f'{city}_forecast.xlsx', mime='application/vnd.ms-excel')