Update app.py

app.py

@@ -84,3 +84,10 @@ if st.button('Run Grid Search'):
         'seasonal_period': best_params[3]
     }
     st.write(f"Best Parameters: {best_params} with AIC: {best_aic}")
+
+    
+# Export to Excel button
+if st.button('Export 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='forecast.xlsx', mime='application/vnd.ms-excel')