Fix score formatting to avoid coercing NaN to 0; show 'Not Submitted' instead.\n\nCo-authored-by: openhands <[email protected]>

leaderboard_transformer.py

@@ -584,19 +584,16 @@ def format_score_column(df: pd.DataFrame, score_col_name: str) -> pd.DataFrame:
     status_color = "#ec4899"  # The same color as your other status text
     is_overall_score = (score_col_name == "Overall Score")
 
-    # First, fill any NaN values with 0 so we only have one case to handle.
-    # We must use reassignment to avoid the SettingWithCopyWarning.
-    df[score_col_name] = df[score_col_name].fillna(0)
-
     def apply_formatting(score_value):
-        # Now, we just check if the value is 0.
-        if score_value == 0:
+        # Explicitly handle missing values without turning them into zeros
+        if pd.isna(score_value):
+            return f'<span style="color: {status_color};">Not Submitted</span>'
+        # Show true zero distinctly
+        if isinstance(score_value, (int, float)) and score_value == 0:
             formatted = f'<span style="color: {status_color};">0.0</span>'
-        # For all other numbers, format them for consistency.
         elif isinstance(score_value, (int, float)):
             formatted = f"{score_value:.3f}"
         else:
-            # Fallback for any unexpected non-numeric data
             formatted = str(score_value)
         
         # Make Overall Score bold