在Python中实现俄罗斯方块可以使用Pygame这个游戏开发库，它提供了丰富的绘图、音效和输入处理功能。以下是一个简单的示例代码，实现了一个基本的俄罗斯方块游戏：
```python
import pygame
import random
# 初始化Pygame
pygame.init()
# 设置窗口大小
WINDOW_WIDTH = 400
WINDOW_HEIGHT = 600
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)
# 创建窗口
screen = pygame.display.set_mode(WINDOW_SIZE)
pygame.display.set_caption('Tetris')
# 定义方块大小和颜色
BLOCK_SIZE = 20
BLOCK_COLORS = [
(255, 0, 0), # 红色
(0, 255, 0), # 绿色
(0, 0, 255), # 蓝色
(255, 255, 0), # 黄色
(255, 0, 255), # 紫色
]
# 定义方块形状
BLOCK_SHAPES = [
[
[1, 1],
[1, 1],
],
[
[0, 2, 0],
[2, 2, 2],
],
[
[3, 3, 0],
[0, 3, 3],
],
[
[0, 4, 4],
[4, 4, 0],
],
[
[5, 5, 5],
[0, 5, 0],
],
[
[6, 6, 6, 6],
],
[
[7, 7],
[7, 7],
],
]
# 定义游戏区域
GAME_WIDTH = 10
GAME_HEIGHT = 20
# 初始化游戏区域
game_area = [[0] * GAME_WIDTH for i in range(GAME_HEIGHT)]
# 随机选择一个方块形状
current_shape = random.choice(BLOCK_SHAPES)
current_color = random.choice(BLOCK_COLORS)
# 方块的初始位置
current_x = GAME_WIDTH // 2 - len(current_shape[0]) // 2
current_y = 0
# 定义游戏循环
clock = pygame.time.Clock()
game_over = False
while not game_over:
# 处理事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = True
# 处理方块的移动和旋转
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT]:
current_x -= 1
if keys[pygame.K_RIGHT]:
current_x += 1
if keys[pygame.K_UP]:
current_shape = [[current_shape[j][i] for j in range(len(current_shape))] for i in range(len(current_shape[0])-1, -1, -1)]
if keys[pygame.K_DOWN]:
current_y += 1
# 检测方块是否越界或与已有方块重叠
collided = False
for i in range(len(current_shape)):
for j in range(len(current_shape[0])):
if current_shape[i][j] != 0:
if current_x+j < 0 or current_x+j >= GAME_WIDTH or current_y+i >= GAME_HEIGHT or game_area[current_y+i][current_x+j] != 0:
collided = True
break
if collided:
break
# 如果方块与已有方块重叠，则将其固定在游戏区域中
if collided:
for i in range(len(current_shape)):
for j in range(len(current_shape[0])):
if current_shape[i][j] != 0:
game_area[current_y+i][current_x+j] = current_color
# 随机选择一个新的方块形状和颜色
current_shape = random.choice(BLOCK_SHAPES)
current_color = random.choice(BLOCK_COLORS)
current_x = GAME_WIDTH // 2 - len(current_shape[0]) // 2
current_y = 0
# 绘制游戏区域和方块
screen.fill((0, 0, 0))
for i in range(GAME_HEIGHT):
for j in range(GAME_WIDTH):
if game_area[i][j] != 0:
pygame.draw.rect(screen, game_area[i][j], (j*BLOCK_SIZE, i*BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))
for i in range(len(current_shape)):
for j in range(len(current_shape[0])):
if current_shape[i][j] != 0:
pygame.draw.rect(screen, current_color, ((current_x+j)*BLOCK_SIZE, (current_y+i)*BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE))
# 更新屏幕
pygame.display.flip()
# 控制游戏帧率
clock.tick(5)
# 退出Pygame
pygame.quit()
```
这段代码实现了一个简单的俄罗斯方块游戏，其中用到了Pygame的绘图和输入处理功能。