fix dataframe sorting again

app.py

@@ -86,12 +86,12 @@ def load_submissions():
 
         leaderboard.append(leaderboard_row)
 
-    return pd.DataFrame(leaderboard)
-
-def sort_round_columns(df):
+    df = pd.DataFrame(leaderboard)
+    
     for column in df.columns:
         if df[column].dtype == "float64":
             df[column] = df[column].round(2)
+            
     return df.sort_values(by="Average ⬆️", ascending=False)
 
 with gr.Blocks() as demo:
@@ -103,7 +103,6 @@ with gr.Blocks() as demo:
     with gr.Tabs():
         with gr.Tab("Demo"):
             df = gr.Dataframe(
-                sort_round_columns,
                 label="a smol course leaderboard",
                 value=load_submissions(),
                 headers=COLUMNS,