以下是一个使用 Python 和 PyGame库在 PyCharm中创建一个简单的小游戏（贪吃蛇游戏）的示例代码，希望对您有所帮助：

import pygame
import random

# 基础设置
# 屏幕高度
SCREEN_HEIGHT = 480
# 屏幕宽度
SCREEN_WIDTH = 600
# 小方格大小
GRID_SIZE = 20

# 颜色设置
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
GREEN = (0, 255, 0)

# 初始化 `PyGame`
pygame.init()

# 创建屏幕
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption("贪吃蛇游戏")

# 游戏时钟
clock = pygame.time.Clock()

# 蛇的初始位置和速度
snake_pos = [200, 100]
snake_speed = [0, 0]

# 食物的初始位置
food_pos = [random.randint(0, SCREEN_WIDTH // GRID_SIZE - 1) * GRID_SIZE,
            random.randint(0, SCREEN_HEIGHT // GRID_SIZE - 1) * GRID_SIZE]

# 蛇的身体列表
snake_body = [[snake_pos[0], snake_pos[1]]]

# 游戏结束标志
game_over = False

# 游戏循环
while not game_over:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True

        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP and snake_speed[1]!= GRID_SIZE:
                snake_speed = [0, -GRID_SIZE]
            elif event.key == pygame.K_DOWN and snake_speed[1]!= -GRID_SIZE:
                snake_speed = [0, GRID_SIZE]
            elif event.key == pygame.K_LEFT and snake_speed[0]!= GRID_SIZE:
                snake_speed = [-GRID_SIZE, 0]
            elif event.key == pygame.K_RIGHT and snake_speed[0]!= -GRID_SIZE:
                snake_speed = [GRID_SIZE, 0]

    # 根据速度移动蛇头
    snake_pos[0] += snake_speed[0]
    snake_pos[1] += snake_speed[1]

    # 判断蛇是否吃到食物
    if snake_pos[0] == food_pos[0] and snake_pos[1] == food_pos[1]:
        food_pos = [random.randint(0, SCREEN_WIDTH // GRID_SIZE - 1) * GRID_SIZE,
                    random.randint(0, SCREEN_HEIGHT // GRID_SIZE - 1) * GRID_SIZE]
    else:
        # 去除蛇尾
        del snake_body[0]

    # 判断蛇是否撞到自己或边界
    if [snake_pos[0], snake_pos[1]] in snake_body[1:]:
        game_over = True
    elif snake_pos[0] < 0 or snake_pos[0] >= SCREEN_WIDTH or snake_pos[1] < 0 or snake_pos[1] >= SCREEN_HEIGHT:
        game_over = True

    # 增加蛇的长度
    snake_body.append(list(snake_pos))

    # 绘制背景
    screen.fill(BLACK)

    # 绘制食物
    pygame.draw.rect(screen, GREEN, [food_pos[0], food_pos[1], GRID_SIZE, GRID_SIZE])

    # 绘制蛇
    for pos in snake_body:
        pygame.draw.rect(screen, WHITE, [pos[0], pos[1], GRID_SIZE, GRID_SIZE])

    # 刷新屏幕
    pygame.display.flip()

    # 控制游戏帧率
    clock.tick(10)

# 退出游戏
pygame.quit()

您可以在 PyCharm中运行这段代码，开始您的贪吃蛇游戏。当然，这只是一个简单的示例，您可以根据自己的需求对游戏进行扩展和完善。希望这个示例对您有帮助！如果您还有其他问题，欢迎继续提问

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