Update app.py

app.py

@@ -1,6 +1,7 @@
 import streamlit as st
 import pandas as pd
 import json
+import io
 
 # Oyuncu sınıfı tanımı
 class Player:
@@ -83,7 +84,7 @@ for player in players:
     st.subheader(player.name)
     player.league_position = st.number_input(f"Lig Sıralaması ({player.name})", min_value=1, max_value=20, value=player.league_position or 1)
     player.target_hit = st.selectbox(f"Hedef Tutturması ({player.name})", options=[1, -1], index=0 if player.target_hit == 1 else 1)
-    player.cup_stage = st.selectbox(f"Kupa Aşaması ({player.name})", options=[4, 3, 2, 1], index=player.cup_stage or 0)
+    player.cup_stage = st.selectbox(f"Kupa Aşaması ({player.name})", options=[4, 3, 2, 1], index=0 if player.cup_stage is None else player.cup_stage - 1)
     player.yellow_cards = st.number_input(f"Sarı Kartlar ({player.name})", min_value=0, value=player.yellow_cards)
     player.red_cards = st.number_input(f"Kırmızı Kartlar ({player.name})", min_value=0, value=player.red_cards)
     player.goals_conceded = st.number_input(f"Yenilen Goller ({player.name})", min_value=0, value=player.goals_conceded)