俄罗斯方块游戏的Python代码

这是一个简单的俄罗斯方块游戏的Python代码，使用了pygame库。请确保你已经安装了pygame库。如果没有，你可以使用以下命令进行安装：

pip install pygame

然后，你可以使用以下代码来创建一个简单的俄罗斯方块游戏：

import pygame  
import random  
  
# 初始化pygame  
pygame.init()  
  
# 设置屏幕大小和标题  
screen_width = 800  
screen_height = 600  
screen = pygame.display.set_mode((screen_width, screen_height))  
pygame.display.set_caption("俄罗斯方块")  
  
# 设置颜色  
WHITE = (255, 255, 255)  
RED = (255, 0, 0)  
GREEN = (0, 255, 0)  
BLACK = (0, 0, 0)  
  
# 定义方块类  
class Block(pygame.sprite.Sprite):  
    def __init__(self):  
        super().__init__()  
        self.image = pygame.Surface([20, 20])  
        self.image.fill(RED)  
        self.rect = self.image.get_rect()  
        self.rect.x = random.randint(0, screen_width - 20)  
        self.rect.y = random.randint(0, screen_height - 40)  
        self.speed = random.randint(1, 3)  
        self.type = random.randint(1, 4)  # 1: square, 2: L-shape, 3: Z-shape, 4: I-shape  
        self.rotate = random.randint(0, 3)  # 0: none, 1: clockwise, 2: counterclockwise, 3: downwards  
        self.rotation_speed = random.randint(1, 3)  # The speed of rotation in one direction.  
        self.disappear_after = random.randint(10, 30)  # The number of frames after which the block disappears.  
        self.disappeared = False  # Whether the block has disappeared or not.  
        self.remove_after = False  # Whether the block should be removed after a certain number of frames.  
      
    def update(self):  
        if self.disappear_after > 0:  # If the block has not disappeared yet...  
            self.disappear_after -= 1  # ...decrease the number of frames left for the block to disappear.  
            if self.disappear_after == 0:  # If the block has disappeared...  
                self.disappeared = True  # ...mark the block as disappeared.  
            if self.remove_after:  # If the block should be removed after a certain number of frames...  
                if self.disappear_after == self.remove_after:  # ...remove the block if the number of frames is reached.  
                    self.kill()  # Remove the block from the game.  
            else:  # If the block should not be removed after a certain number of frames...  
                if self.disappear_after == self:  # ...remove the block if the number of frames is reached and mark it as removed after a certain number of frames.  
                    self.kill()  # Remove the block from the game.  
                    self.remove_after = True  # Mark the block as removed after a certain number of frames as well.  
            if self.type == 1:  # Square block  
                if self.rotate == 1:  # Clockwise rotation  
                    if self.rect.x < screen_width - 20:  # If there is enough space to rotate the block...  
                        self.rect = pygame.Rect(self.rect.x, self.rect.y, self.rect.width, self.rect.height)  # ...update the position of the block to fit its new rotated state...  
                        self.rect = self.rect + (20 * (3 - self.rotate), 0)  # ...and move it to its new position on the grid to fit its new rotated state.  
                elif self.rotate == 2:  # Counterclockwise rotation  
                    if self.rect.x > 0:  # If there is enough space to rotate the block...  
                        self.rect = pygame.Rect(self.rect.x, self.rect.y, self