tic tac toe using python and AI

import math

class TicTacToe:
    def __init__(self):
        self.board = [' ' for _ in range(9)]

    def print_board(self):
        for i in range(0, 9, 3):
            print('|'.join(self.board[i:i+3]))
            if i < 6:
                print('-----')

    def available_moves(self):
        return [i for i, spot in enumerate(self.board) if spot == ' ']

    def make_move(self, position, letter):
        self.board[position] = letter

    def check_winner(self, board, letter):
        winning_combinations = [[0, 1, 2], [3, 4, 5], [6, 7, 8],
                                [0, 3, 6], [1, 4, 7], [2, 5, 8],
                                [0, 4, 8], [2, 4, 6]]
        for combo in winning_combinations:
            if all(board[i] == letter for i in combo):
                return True
        return False

    def check_draw(self):
        return ' ' not in self.board

    def minimax(self, board, maximizing_player):
        available_spots = self.available_moves()
        if self.check_winner(board, 'X'):
            return -1
        elif self.check_winner(board, 'O'):
            return 1
        elif self.check_draw():
            return 0

        if maximizing_player:
            max_eval = -math.inf
            for move in available_spots:
                board[move] = 'O'
                evaluation = self.minimax(board, False)
                board[move] = ' '
                max_eval = max(max_eval, evaluation)
            return max_eval
        else:
            min_eval = math.inf
            for move in available_spots:
                board[move] = 'X'
                evaluation = self.minimax(board, True)
                board[move] = ' '
                min_eval = min(min_eval, evaluation)
            return min_eval

    def get_best_move(self):
        best_score = -math.inf
        best_move = None
        for move in self.available_moves():
            self.board[move] = 'O'
            score = self.minimax(self.board, False)
            self.board[move] = ' '
            if score > best_score:
                best_score = score
                best_move = move
        return best_move

    def play_game(self):
        print("Welcome to Tic Tac Toe!")
        self.print_board()

        while True:
            if self.check_winner(self.board, 'X'):
                print("You win!")
                break
            if self.check_winner(self.board, 'O'):
                print("AI wins!")
                break
            if self.check_draw():
                print("It's a draw!")
                break

            user_move = int(input("Make your move (0-8): "))
            while user_move not in self.available_moves():
                user_move = int(input("Invalid move. Make your move (0-8): "))
            self.make_move(user_move, 'X')
            self.print_board()

            if self.check_winner(self.board, 'X'):
                print("You win!")
                break
            if self.check_winner(self.board, 'O'):
                print("AI wins!")
                break
            if self.check_draw():
                print("It's a draw!")
                break

            print("AI's turn...")
            ai_move = self.get_best_move()
            self.make_move(ai_move, 'O')
            self.print_board()

if __name__ == '__main__':
    game = TicTacToe()
    game.play_game()