Update app.py (#106)

- Update app.py (7d6c57f6ab2952794172ef328b35dcc8763d7ec9)

app.py

@@ -620,9 +620,6 @@ def create_game_page():
             st.info(f"AI questions will be generated for: {ai_topic}")
             # Here you can call your AI question generator function if you have one
 
-
-LEADERBOARD_FILE = "leaderboard.csv"
-
 def save_score_to_csv(
     name,
     score,
@@ -633,9 +630,14 @@ def save_score_to_csv(
     answers=None,
     correct_flags=None
 ):
-    file_exists = os.path.exists(LEADERBOARD_FILE)
-
-    with open(LEADERBOARD_FILE, "a", newline="", encoding="utf-8") as f:
+    file_exists = os.path.isfile(LEADERBOARD_FILE)
+
+    with open(
+        LEADERBOARD_FILE,
+        "a",
+        newline="",
+        encoding="utf-8"
+    ) as f:
         writer = csv.writer(f)
 
         # Write header only once
@@ -656,15 +658,16 @@ def save_score_to_csv(
             name,
             score,
             game_id,
-            ",".join(topics) if isinstance(topics, list) else topics,
+            ", ".join(topics) if isinstance(topics, list) else topics,
             datetime.now().isoformat(),
             avatar,
-            str(questions),
-            str(answers),
-            str(correct_flags)
+            questions,
+            answers,
+            correct_flags
         ])
 
 
+
 # 1️⃣ Define join_game first
 def join_game(game_id, username, avatar):
     games = unified_get("games") or {}