Untitled

def print_board(board):
    """Prints the current state of the board."""
    for row in board:
        print(" | ".join(row))
        print("-" * 9)

def check_winner(board):
    """Checks if there is a winner."""
    # Check rows, columns, and diagonals for a win
    for i in range(3):
        if board[i][0] == board[i][1] == board[i][2] != ' ':
            return board[i][0]
        if board[0][i] == board[1][i] == board[2][i] != ' ':
            return board[0][i]
    if board[0][0] == board[1][1] == board[2][2] != ' ':
        return board[0][0]
    if board[0][2] == board[1][1] == board[2][0] != ' ':
        return board[0][2]
    return None

def is_board_full(board):
    """Checks if the board is full."""
    return all(cell != ' ' for row in board for cell in row)

def tic_tac_toe():
    """Main function to play Tic Tac Toe."""
    board = [[' ' for _ in range(3)] for _ in range(3)]
    current_player = 'X'

    while True:
        print_board(board)
        print(f"Player {current_player}'s turn.")

        # Get valid input from the player
        while True:
            try:
                row = int(input("Enter the row (0-2): "))
                col = int(input("Enter the column (0-2): "))
                if board[row][col] == ' ':
                    board[row][col] = current_player
                    break
                else:
                    print("Cell already taken! Choose another.")
            except (ValueError, IndexError):
                print("Invalid input! Please enter numbers from 0 to 2.")

        winner = check_winner(board)
        if winner:
            print_board(board)
            print(f"Player {winner} wins!")
            break

        if is_board_full(board):
            print_board(board)
            print("It's a tie!")
            break

        # Switch players
        current_player = 'O' if current_player == 'X' else 'X'

# Start the game
if __name__ == "__main__":
    tic_tac_toe()