Code Editor for app.py

import numpy as np
import streamlit as st

# Initialize game state
if "board" not in st.session_state:
    st.session_state.board = np.full((3, 3), None)
if "turn" not in st.session_state:
    st.session_state.turn = "X"
if "winner" not in st.session_state:
    st.session_state.winner = None

# Function to check for a winner

def check_winner(board):
    for row in board:
        if np.all(row == "X"):
            return "X"
        if np.all(row == "O"):
            return "O"
    for col in range(3):
        if np.all(board[:, col] == "X"):
            return "X"
        if np.all(board[:, col] == "O"):
            return "O"
    if np.all(np.diag(board) == "X") or np.all(np.diag(np.fliplr(board)) == "X"):
        return "X"
    if np.all(np.diag(board) == "O") or np.all(np.diag(np.fliplr(board)) == "O"):
        return "O"
    return None

# Display the board
st.title("Tic Tac Toe")

cols = st.columns(3)
for i in range(3):
    for j in range(3):
        if cols[j].button(st.session_state.board[i][j] if st.session_state.board[i][j] else " ", key=f"{i}-{j}"):
            if st.session_state.board[i][j] is None and st.session_state.winner is None:
                st.session_state.board[i][j] = st.session_state.turn
                st.session_state.winner = check_winner(st.session_state.board)
                st.session_state.turn = "O" if st.session_state.turn == "X" else "X"

# Display winner message
if st.session_state.winner:
    st.success(f"Player '{st.session_state.winner}' wins!")

# Reset game
if st.button("Reset Game"):
    st.session_state.board = np.full((3, 3), None)
    st.session_state.turn = "X"
    st.session_state.winner = None