Update app.py

app.py

@@ -103,11 +103,15 @@ with demo:
             
             if "Model" in df_gen.columns:
                 df_gen = df_gen[df_gen["Model"].isin(target_models_gen)]
-                # Sort by defined order
+                
+                # 3. Sort by defined order (Using Categorical)
                 df_gen["Model"] = pd.Categorical(df_gen["Model"], categories=target_models_gen, ordered=True)
                 df_gen = df_gen.sort_values("Model")
+                
+                # 🔴【关键修复】排序完后，必须转回 string 类型，否则后面 fillna("-") 会报错
+                df_gen["Model"] = df_gen["Model"].astype(str)
 
-            # 3. Clean up: Replace NaN with "-" (美化表格)
+            # 4. Clean up: Replace NaN with "-"
             df_gen = df_gen.fillna("-")
 
             gr.Dataframe(
@@ -141,12 +145,12 @@ with demo:
             if "Model" in df_long.columns:
                 df_long = df_long[df_long["Model"].isin(target_models_long)]
                 
-                # 3. Sort: Default by Understanding Acc (Numbers are needed here)
+                # 3. Sort: Default by Understanding Acc
                 sort_col = "LongVideo QA / Acc"
                 if sort_col in df_long.columns:
                     df_long = df_long.sort_values(by=sort_col, ascending=False)
             
-            # 4. Clean up: Replace NaN with "-" (After sorting is done)
+            # 4. Clean up: Replace NaN with "-"
             df_long = df_long.fillna("-")
 
             gr.Dataframe(