Refactor player selection logic in Handbuilder tab of app.py to streamline DataFrame handling and improve user experience by ensuring fresh data on each rerun, while maintaining lineup display functionality.

app.py

@@ -802,45 +802,15 @@ with tab3:
 with tab4:
     st.header("Handbuilder")
 
-    # Only initialize once
-    if 'handbuilder_select' not in st.session_state:
-        st.session_state.handbuilder_select = dk_roo[['Player', 'Position', 'Team', 'Salary', 'Median', 'Ceiling', 'Own%']].copy()
-        st.session_state.handbuilder_select['Select'] = False
-
-    # Use the session state DataFrame as the source
-    edited_df = st.data_editor(
-        st.session_state.handbuilder_select,
-        column_config={
-            "Select": st.column_config.CheckboxColumn(
-                "Select",
-                help="Check to add player to lineup",
-                default=False
-            )
-        },
-        use_container_width=True,
-        hide_index=True,
-        key="handbuilder_editor"
-    )
-
-    # Update session state only if there are changes
-    if not edited_df.equals(st.session_state.handbuilder_select):
-        st.session_state.handbuilder_select = edited_df
-
-    # Filter selected players for the lineup
-    selected_players = st.session_state.handbuilder_select[st.session_state.handbuilder_select['Select'] == True]
+    # Prepare the player selection DataFrame (fresh on every rerun)
+    player_select_df = dk_roo[['Player', 'Position', 'Team', 'Salary', 'Median', 'Ceiling', 'Own%']].copy()
+    player_select_df['Select'] = False  # Add a checkbox column
 
     col1, col2 = st.columns([1, 2])
-    with col1:
-        st.subheader("Lineup")
-        st.dataframe(
-            selected_players.drop(columns=['Select']),
-            use_container_width=True,
-            height=500
-        )
     with col2:
         st.subheader("Player Select")
-        st.data_editor(
-            st.session_state.handbuilder_select,
+        edited_df = st.data_editor(
+            player_select_df,
             column_config={
                 "Select": st.column_config.CheckboxColumn(
                     "Select",
@@ -850,5 +820,16 @@ with tab4:
             },
             use_container_width=True,
             hide_index=True,
-            key="handbuilder_editor_view"
+            key="handbuilder_editor"
+        )
+
+    # Filter selected players for the lineup
+    selected_players = edited_df[edited_df['Select'] == True]
+
+    with col1:
+        st.subheader("Lineup")
+        st.dataframe(
+            selected_players.drop(columns=['Select']),
+            use_container_width=True,
+            height=500
         )