写出2048游戏的Python代码

2048 游戏是一款由 Gabriele Cirulli 创建的经典游戏，它的目标是通过滑动网格中的数字方块，使得相同数字的方块在合并时相加，最终达到 2046 或更高的分数。

下面是一个使用 Python 实现 2048 游戏的示例代码：

``` class Game: def init(self, rows, cols): self.rows = rows self.cols = cols self.grid = [[0 for _ in range(cols)] for _ in range(rows)] self.add_random_tile() self.add_random_tile()

def add_random_tile(self): empty_cells = [(i, j) for i in range(self.rows) for j in range(self.cols) if self.grid[i][j] == 0] if not empty_cells: return False i, j = empty_cells[randint(0, len(empty_cells) - 1)] self.grid[i][j] = 2 if randint(0, 1) else 4 return True

def transpose(self): self.grid = [[self.grid[j][i] for j in range(self.rows)] for i in range(self.cols)]

def flip(self): self.grid = [self.grid[i][::-1] for i in range(self.rows)]

def move_left(self): moved = False for i in range(self.rows): row = self.merge_left(self.grid[i]) moved = moved or (row != self.grid[i]) self.grid[i] = row return moved

def move_right(self): self.flip() moved = self.move_left() self.flip() return moved

def move_up(self): self.transpose() moved = self.move_left() self.transpose() return moved

def move_down(self): self.transpose() moved = self.move_right() self.transpose() return moved

def merge_left(self, row): merged = [0 for _ in range(self.cols)] i = 0 for j in range(self.cols): if row[j] == 0: continue if i > 0 and merged[i - 1] == row[j]: merged[i - 1] *= 2 else: merged[i] = row[j] i += 1 return merged

def game_over(self): if any(self.move_left()) or any(self.move_up()):