以下给出两种不同风格的Python实现交互圣诞树的代码示例。 ### 普通圣诞树代码 这段代码主要实现了普通圣诞树的绘制，通过递归函数 `tree()` 来创建树的层级感，再由 `trees()` 函数设置好树根位置并调用 `tree()` 函数完成整棵树的绘制。 ```python import turtle # 定义树的递归函数 def tree(branchLen, t): if branchLen > 5: t.forward(branchLen) t.right(20) tree(branchLen - 15, t) t.left(40) tree(branchLen - 15, t) t.right(20) t.backward(branchLen) # 定义完整树的搭建函数 def trees(t): t.penup() t.goto(0, -200) t.pendown() t.setheading(90) t.color("green") tree(100, t) # 创建画布和画笔 screen = turtle.Screen() screen.title("Python精美圣诞树") t = turtle.Turtle() t.speed(0) # 绘制圣诞树 trees(t) # 保持窗口打开 screen.mainloop() ``` ### 3D旋转圣诞树代码 此代码借助 Pygame 库实现 3D 旋转圣诞树动画展示，包含分层圣诞树、红黄装饰灯、平滑旋转效果以及棕色树干。运行此代码前需先安装 Pygame 库。 ```python import pygame import math # 初始化 Pygame pygame.init() # 设置窗口大小 width, height = 800, 600 screen = pygame.display.set_mode((width, height)) pygame.display.set_caption("3D旋转圣诞树") # 定义颜色 WHITE = (255, 255, 255) GREEN = (0, 128, 0) RED = (255, 0, 0) YELLOW = (255, 255, 0) BROWN = (139, 69, 19) # 主循环 clock = pygame.time.Clock() angle = 0 running = True while running: for event in pygame.event.get(): if event.type == pygame.QUIT: running = False screen.fill(WHITE) # 绘制树干 trunk_x = width // 2 - 20 trunk_y = height - 100 trunk_width = 40 trunk_height = 100 pygame.draw.rect(screen, BROWN, (trunk_x, trunk_y, trunk_width, trunk_height)) # 绘制分层圣诞树 levels = 5 for i in range(levels): level_height = 50 level_width = 200 - i * 30 tree_x = width // 2 - level_width // 2 tree_y = height - 100 - (i + 1) * level_height pygame.draw.polygon(screen, GREEN, [(tree_x, tree_y + level_height), (tree_x + level_width // 2, tree_y), (tree_x + level_width, tree_y + level_height)]) # 添加装饰灯 num_lights = i * 2 + 3 light_radius = 5 for j in range(num_lights): light_x = tree_x + j * (level_width // (num_lights - 1)) light_y = tree_y + level_height // 2 if j % 2 == 0: light_color = RED else: light_color = YELLOW pygame.draw.circle(screen, light_color, (light_x, light_y), light_radius) # 实现旋转效果 angle += 1 if angle >= 360: angle = 0 pygame.display.flip() clock.tick(60) # 退出 Pygame pygame.quit() ```