check if unknown data has rows

app.py

@@ -142,10 +142,11 @@ weekly_metrics_by_market_creator = compute_weekly_metrics_by_market_creator(
 weekly_non_olas_metrics_by_market_creator = compute_weekly_metrics_by_market_creator(
     traders_data, trader_filter="non_Olas"
 )
-
-weekly_unknown_trader_metrics_by_market_creator = (
-    compute_weekly_metrics_by_market_creator(unknown_traders)
-)
+weekly_unknown_trader_metrics_by_market_creator = None
+if len(unknown_traders) > 0:
+    weekly_unknown_trader_metrics_by_market_creator = (
+        compute_weekly_metrics_by_market_creator(unknown_traders)
+    )
 
 weekly_winning_metrics = compute_winning_metrics_by_trader(traders_data=traders_data)
 weekly_non_olas_winning_metrics = compute_winning_metrics_by_trader(
@@ -252,35 +253,36 @@ with demo:
                 outputs=trader_no_markets_plot,
             )
             # Unknown traders graph
-            with gr.Row():
-                gr.Markdown("# Weekly metrics of Unknown traders")
-            with gr.Row():
-                trader_u_details_selector = gr.Dropdown(
-                    label="Select a weekly trader metric",
-                    choices=trader_metric_choices,
-                    value=default_trader_metric,
-                )
+            if weekly_unknown_trader_metrics_by_market_creator is not None:
+                with gr.Row():
+                    gr.Markdown("# Weekly metrics of Unknown traders")
+                with gr.Row():
+                    trader_u_details_selector = gr.Dropdown(
+                        label="Select a weekly trader metric",
+                        choices=trader_metric_choices,
+                        value=default_trader_metric,
+                    )
 
-            with gr.Row():
-                with gr.Column(scale=3):
-                    trader_u_markets_plot = plot_trader_metrics_by_market_creator(
-                        metric_name=default_trader_metric,
+                with gr.Row():
+                    with gr.Column(scale=3):
+                        trader_u_markets_plot = plot_trader_metrics_by_market_creator(
+                            metric_name=default_trader_metric,
+                            traders_df=weekly_unknown_trader_metrics_by_market_creator,
+                        )
+                    with gr.Column(scale=1):
+                        trade_details_text = get_metrics_text()
+
+                def update_u_trader_details(trader_detail):
+                    return plot_trader_metrics_by_market_creator(
+                        metric_name=trader_detail,
                         traders_df=weekly_unknown_trader_metrics_by_market_creator,
                     )
-                with gr.Column(scale=1):
-                    trade_details_text = get_metrics_text()
 
-            def update_u_trader_details(trader_detail):
-                return plot_trader_metrics_by_market_creator(
-                    metric_name=trader_detail,
-                    traders_df=weekly_unknown_trader_metrics_by_market_creator,
+                trader_u_details_selector.change(
+                    update_u_trader_details,
+                    inputs=trader_u_details_selector,
+                    outputs=trader_u_markets_plot,
                 )
-
-            trader_u_details_selector.change(
-                update_u_trader_details,
-                inputs=trader_u_details_selector,
-                outputs=trader_u_markets_plot,
-            )
         with gr.TabItem("📅 Daily metrics"):
             current_week_trades = get_current_week_data(trades_df=traders_data)
             live_trades_current_week = get_current_week_data(trades_df=daily_info)