Refactor contest file handling in app.py

- Updated variable assignments for contest file loading to improve clarity and maintainability.
- Replaced direct references to session state with a local variable for contest data, enhancing code readability and ensuring accurate data processing during name matching operations.

app.py

@@ -35,12 +35,12 @@ with tab1:
             del st.session_state['Contest']
 
         if Contest_file:
-            st.session_state['Contest'], ownership_df, fpts_df, st.session_state['entry_list'] = load_contest_file(Contest_file, sport_select)
-            st.session_state['Contest'] = st.session_state['Contest'].dropna(how='all')
-            st.session_state['Contest'] = st.session_state['Contest'].reset_index(drop=True)
-            if st.session_state['Contest'] is not None:
+            contest_base, ownership_df, fpts_df, st.session_state['entry_list'] = load_contest_file(Contest_file, sport_select)
+            contest_base = contest_base.dropna(how='all')
+            contest_base = contest_base.reset_index(drop=True)
+            if contest_base is not None:
                 st.success('Contest file loaded successfully!')
-                st.dataframe(st.session_state['Contest'].head(10))
+                st.dataframe(contest_base.head(10))
 
     with col2:
         st.subheader("Projections File")
@@ -72,14 +72,14 @@ with tab1:
                 st.dataframe(projections.head(10))
 
     if Contest_file and projections_file:
-        if st.session_state['Contest'] is not None and projections is not None:
+        if contest_base is not None and projections is not None:
             st.subheader("Name Matching functions")
             # Initialize projections_df in session state if it doesn't exist
             if 'projections_df' not in st.session_state:
                 st.session_state['projections_df'] = projections.copy()
                 st.session_state['projections_df']['salary'] = (st.session_state['projections_df']['salary'].astype(str).str.replace(',', '').astype(float).astype(int))
                 # Run name matching only once when first loading the files
-            st.session_state['Contest'], st.session_state['projections_df'], st.session_state['ownership_dict'], st.session_state['actual_dict'] = find_name_mismatches(st.session_state['Contest'], st.session_state['projections_df'], ownership_df, fpts_df)
+            st.session_state['Contest'], st.session_state['projections_df'], st.session_state['ownership_dict'], st.session_state['actual_dict'] = find_name_mismatches(contest_base, st.session_state['projections_df'], ownership_df, fpts_df)
 
 with tab2:
     if 'Contest' in st.session_state and 'projections_df' in st.session_state: