python写一个可直接运行的俄罗斯方块

好的，以下是一个Python编写的可直接运行的俄罗斯方块游戏。

import pygame
import random

# 游戏窗口大小
WINDOW_WIDTH = 500
WINDOW_HEIGHT = 600

# 游戏区域大小
PLAY_WIDTH = 300
PLAY_HEIGHT = 600

# 方块大小
BLOCK_SIZE = 30

# 游戏区域左上角坐标
PLAY_X = (WINDOW_WIDTH - PLAY_WIDTH) // 2
PLAY_Y = WINDOW_HEIGHT - PLAY_HEIGHT

# 方块形状
SHAPES = [
    (0, 1, 2, 3),  # I
    (1, 2, 3, 4),  # L
    (0, 1, 2, 4),  # J
    (0, 1, 3, 4),  # Z
    (1, 2, 4, 5),  # S
    (0, 2, 3, 4),  # T
    (0, 1, 4, 5)   # O
]

# 方块颜色
COLORS = [
    (0, 255, 255),  # I
    (255, 165, 0),  # L
    (0, 0, 255),    # J
    (255, 0, 0),    # Z
    (0, 255, 0),    # S
    (128, 0, 128),  # T
    (255, 255, 0)   # O
]

# 方块移动速度
SPEED = 5

# 初始化Pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption("俄罗斯方块")

# 创建时钟对象
clock = pygame.time.Clock()


class Block:
    def __init__(self, x, y, shape):
        self.x = x
        self.y = y
        self.shape = shape
        self.color = COLORS[SHAPES.index(shape)]
    
    def draw(self):
        for i in range(4):
            pygame.draw.rect(screen, self.color, (PLAY_X + (self.x + i) * BLOCK_SIZE, PLAY_Y + self.y * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))
    
    def move(self, dx, dy):
        if self.x + dx < 0 or self.x + dx + 4 > PLAY_WIDTH // BLOCK_SIZE or self.y + dy + 1 > PLAY_HEIGHT // BLOCK_SIZE:
            return False
        for i in range(4):
            if (self.y + dy) * PLAY_WIDTH // BLOCK_SIZE + self.x + dx + i in occupied:
                return False
        self.x += dx
        self.y += dy
        return True
    
    def rotate(self):
        new_shape = []
        for i in range(16):
            if i % 4 == 0:
                row = []
                for j in range(4):
                    row.append(self.shape[3 - j * 4 + i // 4])
                new_shape += row
        new_x = self.x
        while new_x + 3 >= PLAY_WIDTH // BLOCK_SIZE:
            new_x -= 1
        if new_x < 0:
            new_x = 0
        if (self.y + 1) *