Refactor portfolio export logic in app.py: streamline the concatenation of selected rows and update the export file handling, improving data management and user experience during portfolio updates.

app.py

@@ -919,7 +919,6 @@ with tab3:
                             portfolio_copy = st.session_state['portfolio'].copy()
                         else:
                             portfolio_copy = st.session_state['download_portfolio'].copy()
-                        st.table(portfolio_copy)
                         
                         submitted = st.form_submit_button("Submit")
                         if submitted:
@@ -935,21 +934,16 @@ with tab3:
                                     # Sort by median and take top N rows
                                     top_rows = stack_rows.nlargest(count, sort_var)
                                     selected_rows.append(top_rows)
-                            
-                            st.table(selected_rows)
 
                             # Combine all selected rows
-                            portfolio_copy = pd.concat(selected_rows)
-
-                            st.table(portfolio_copy)
+                            portfolio_concat = pd.concat(selected_rows)
                             
                             # Update export_file with filtered data
-                            export_file = portfolio_copy.copy()
+                            export_file = portfolio_concat.copy()
                             for col in export_file.columns:
                                 if col not in excluded_cols:
                                     export_file[col] = export_file[col].map(st.session_state['export_dict'])
                             st.write('Export portfolio updated!')
-                            st.table(export_file)
             try:    
                 st.download_button(label="Download Portfolio", data=export_file.to_csv(index=False), file_name="portfolio.csv", mime="text/csv")
             except: