streamlit_app.py

import streamlit as st
import numpy as np

def check_winner(board):
    for player in ['X', 'O']:
        # Check rows, columns, and diagonals
        for i in range(3):
            if (board[i, :] == [player, player, player]).all() or \
               (board[:, i] == [player, player, player]).all():
                return player
        if (np.diag(board) == [player, player, player]).all() or \
           (np.diag(np.fliplr(board)) == [player, player, player]).all():
            return player
    return None

def main():
    st.title('Tic Tac Toe Game')

    board = np.array([['', '', ''],
                      ['', '', ''],
                      ['', '', '']])

    player = 'X'
    winner = None

    while not winner and '' in board:
        st.write(f"Player {player}'s turn")
        row = st.slider("Select Row", 0, 2)
        col = st.slider("Select Column", 0, 2)

        if board[row, col] == '':
            board[row, col] = player
            winner = check_winner(board)
            player = 'O' if player == 'X' else 'X'
        else:
            st.warning("Invalid move. Please select an empty cell.")

        st.write(board)

    if winner:
        st.success(f"Player {winner} wins!")
    else:
        st.warning("It's a draw!")

if __name__ == '__main__':
    main()