Update app.py

app.py

@@ -451,6 +451,7 @@ def main():
   buffer = io.BytesIO()
   with pd.ExcelWriter(buffer, engine="xlsxwriter") as writer:
     df_tab.to_excel(writer,sheet_name="Sheet1",index=False)
+    df_final.to_excel(writer,sheet_name="Sheet2",index=False)
     writer.close()
   df = pd.read_csv('final_data.csv', index_col=0)