Implement pagination for dataframe display in app.py

- Added pagination controls to navigate through the displayed dataframe, enhancing user experience by allowing users to view data in manageable chunks.
- Included logic to update session state for current page tracking and to clear relevant session data upon navigation, ensuring a fresh state for user interactions.
- Improved overall data presentation with dynamic start and end index calculations for the displayed subset of the dataframe.

app.py

@@ -183,6 +183,46 @@ with tab2:
             working_df['dupes'] = working_df.groupby('sorted').transform('size')
             working_df = working_df.drop('sorted', axis=1)
         
+        
+        # Initialize pagination in session state if not exists
+        if 'current_page' not in st.session_state:
+            st.session_state.current_page = 0
+
+        # Calculate total pages
+        rows_per_page = 500
+        total_rows = len(working_df)
+        total_pages = (total_rows + rows_per_page - 1) // rows_per_page
+
+        # Create pagination controls in a single row
+        pagination_cols = st.columns([4, 1, 1, 1, 4])
+        with pagination_cols[1]:
+            if st.button("← Previous", disabled=st.session_state.current_page == 0):
+                st.session_state.current_page -= 1
+                if 'player_frame' in st.session_state:
+                    del st.session_state['player_frame']
+                    del st.session_state['stack_frame']
+
+        with pagination_cols[2]:
+            st.markdown(f"**Page {st.session_state.current_page + 1} of {total_pages}**", unsafe_allow_html=True)
+        with pagination_cols[3]:
+            if st.button("Next →", disabled=st.session_state.current_page == total_pages - 1):
+                st.session_state.current_page += 1
+                if 'player_frame' in st.session_state:
+                    del st.session_state['player_frame']
+                    del st.session_state['stack_frame']
+        # Calculate start and end indices for current page
+        start_idx = st.session_state.current_page * rows_per_page
+        end_idx = min((st.session_state.current_page + 1) * rows_per_page, total_rows)
+        st.dataframe(
+            working_df.iloc[start_idx:end_idx].style
+            .background_gradient(axis=0)
+            .background_gradient(cmap='RdYlGn')
+            .format(precision=2), 
+            height=1000,
+            use_container_width=True,
+            hide_index=True
+        )
+
         for col in player_columns:
             contest_players = working_df.copy()
             players_1per = working_df.nlargest(n=int(len(working_df) * 0.01), columns='actual_fpts')
@@ -237,45 +277,3 @@ with tab2:
                              style.background_gradient(cmap='RdYlGn').
                              format(formatter='{:.2%}', subset=st.session_state['stack_frame'].select_dtypes(include=['number']).columns),
                              hide_index=True)
-
-        start_idx = 0
-        end_idx = 500
-        st.dataframe(
-            working_df.iloc[start_idx:end_idx].style
-            .background_gradient(axis=0)
-            .background_gradient(cmap='RdYlGn')
-            .format(precision=2), 
-            height=1000,
-            use_container_width=True,
-            hide_index=True
-        )
-
-        # Initialize pagination in session state if not exists
-        if 'current_page' not in st.session_state:
-            st.session_state.current_page = 0
-
-        # Calculate total pages
-        rows_per_page = 500
-        total_rows = len(working_df)
-        total_pages = (total_rows + rows_per_page - 1) // rows_per_page
-
-        # Create pagination controls in a single row
-        pagination_cols = st.columns([4, 1, 1, 1, 4])
-        with pagination_cols[1]:
-            if st.button("← Previous", disabled=st.session_state.current_page == 0):
-                st.session_state.current_page -= 1
-                if 'player_frame' in st.session_state:
-                    del st.session_state['player_frame']
-                    del st.session_state['stack_frame']
-
-        with pagination_cols[2]:
-            st.markdown(f"**Page {st.session_state.current_page + 1} of {total_pages}**", unsafe_allow_html=True)
-        with pagination_cols[3]:
-            if st.button("Next →", disabled=st.session_state.current_page == total_pages - 1):
-                st.session_state.current_page += 1
-                if 'player_frame' in st.session_state:
-                    del st.session_state['player_frame']
-                    del st.session_state['stack_frame']
-        # Calculate start and end indices for current page
-        start_idx = st.session_state.current_page * rows_per_page
-        end_idx = min((st.session_state.current_page + 1) * rows_per_page, total_rows)