用python 3.9.7 写一个拼图小游戏

好的，以下是一个简单的拼图小游戏的 Python 代码：

import random

# 定义拼图游戏的类
class PuzzleGame:
    def __init__(self, size):
        self.size = size
        self.board = [[str(i + j * size + 1) for i in range(size)] for j in range(size)]
        self.board[size - 1][size - 1] = ' '

    # 打印当前的拼图状态
    def print_board(self):
        for i in range(self.size):
            print(' '.join(self.board[i]))

    # 移动拼图块
    def move(self, direction):
        x, y = self.find_space()
        if direction == 'up' and y > 0:
            self.board[y][x], self.board[y - 1][x] = self.board[y - 1][x], self.board[y][x]
        elif direction == 'down' and y < self.size - 1:
            self.board[y][x], self.board[y + 1][x] = self.board[y + 1][x], self.board[y][x]
        elif direction == 'left' and x > 0:
            self.board[y][x], self.board[y][x - 1] = self.board[y][x - 1], self.board[y][x]
        elif direction == 'right' and x < self.size - 1:
            self.board[y][x], self.board[y][x + 1] = self.board[y][x + 1], self.board[y][x]

    # 查找空白块的位置
    def find_space(self):
        for y in range(self.size):
            for x in range(self.size):
                if self.board[y][x] == ' ':
                    return x, y

    # 判断是否完成拼图
    def is_solved(self):
        return str(self) == ' '.join([str(i + 1) for i in range(self.size * self.size - 1)]) + ' '

    def __str__(self):
        return ' '.join([item for sublist in self.board for item in sublist])

# 主程序
if __name__ == '__main__':
    game = PuzzleGame(3)
    moves = ['up', 'down', 'left', 'right']
    for i in range(100):
        game.move(random.choice(moves))
    while not game.is_solved():
        game.print_board()
        direction = input('Enter direction (up, down, left, right): ')
        game.move(direction)
    print('Congratulations, you solved the puzzle!')

这个程序实现了一个 3x3 的拼图游戏，可以通过输入 up、down、left、right 来移动拼图块，直到完成拼图。