Enhance data upload functionality in app.py with new portfolio upload section

- Refactored the layout in the "Data Load" tab to include three columns for data selection, contest upload, and portfolio upload.
- Added functionality for users to upload a portfolio of lineups, including data processing and validation for CSV and Excel files. This improves user experience by allowing direct comparison of portfolio performance against contest data.

app.py

@@ -114,9 +114,9 @@ dupe_format = {'uniques%': '{:.2%}', 'under_5%': '{:.2%}', 'under_10%': '{:.2%}'
 
 tab1, tab2 = st.tabs(["Data Load", "Contest Analysis"])
 with tab1:
-    col1, col2 = st.columns(2)
+    data_select, contest_upload, portfolio_upload = st.columns(3)
 
-    with col1:
+    with data_select:
         if st.button('Clear data', key='reset1'):
             st.session_state.clear()
         sport_options, date_options = st.columns(2)
@@ -153,7 +153,7 @@ with tab1:
                     st.session_state['Contest_file'] = grab_contest_data(sport_select, contest_name_var, contest_id_map, date_select, date_select2)
             else:
                 pass
-    with col2:
+    with contest_upload:
         st.info(f"If you are manually loading and do not have the results CSV for the contest you selected, you can find it here: https://www.draftkings.com/contest/gamecenter/{contest_id_map[contest_name_var]}#/, or you can initiate a download with this link: https://www.draftkings.com/contest/exportfullstandingscsv/{contest_id_map[contest_name_var]}")
         if parse_type == 'Manual':
             if 'Contest_file_helper' in st.session_state:
@@ -169,6 +169,19 @@ with tab1:
                     st.warning('Please upload a Contest CSV')
             else:
                 pass
+    
+    with portfolio_upload:
+        st.info("If you have a portfolio of lineups, you can upload them here to see how they perform against the field")
+        if st.button('Load Portfolio Data', key='load_portfolio_data'):
+            st.session_state['portfolio_file'] = st.file_uploader("Upload Portfolio File (CSV or Excel)", type=['csv', 'xlsx', 'xls'])
+            if st.session_state['portfolio_file'] is not None:
+                st.session_state['portfolio_df'] = pd.read_csv(st.session_state['portfolio_file'])
+                st.session_state['portfolio_df'] = st.session_state['portfolio_df'].columns = ['P1', 'P2', 'C', '1B', '2B', '3B', 'SS', 'OF1', 'OF2', 'OF3']
+                st.session_state['portfolio_df']['BaseName'] = 'Backtesting_upload'
+                st.session_state['portfolio_df']['EntryCount'] = len(st.session_state['portfolio_df'])
+                st.session_state['portfolio_df'] = st.session_state['portfolio_df'][['BaseName', 'EntryCount', 'P1', 'P2', 'C', '1B', '2B', '3B', 'SS', 'OF1', 'OF2', 'OF3']]
+            else:
+                pass
 
     if 'Contest_file' in st.session_state:
         st.session_state['Contest'], st.session_state['ownership_df'], st.session_state['actual_df'], st.session_state['entry_list'], check_lineups = load_contest_file(st.session_state['Contest_file'], type_var, st.session_state['player_info'], sport_select)