python圣诞树代码

互联网 20-2-13

python圣诞树代码

1、简单的绘制圣诞树

新建tree1.py或者直接输入下面代码运行

（推荐学习：Python教程）

#声明树的高度 height = 5 #树的雪花数，初始为1 stars = 1 #以数的高度作为循环次数   for i in range(height):     print((' ' * (height - i)) + ('*' * stars))     stars += 2 #输出树干 print((' ' * height) + '|')

2、使用turtle绘制简单圣诞树

新建tree2py，输入以下代码

#导入turtle库 import turtle #设置屏幕大小 screen = turtle.Screen() screen.setup(800,600) #获取画笔并设置一些属性：圆形、红色、快 circle = turtle.Turtle() circle.shape('circle') circle.color('red') circle.speed('fastest') #抬起画笔 circle.up() #重新获取画笔 square = turtle.Turtle() #重新设置画笔属性：四方形、绿色、快 square.shape('square') square.color('green') square.speed('fastest') #重新抬起画笔 square.up() #跳到指定坐标位置 circle.goto(0,280) #复制当前图形 circle.stamp() k = 0 for i in range(1, 17):     y = 30*i     for j in range(i-k):         x = 30*j         square.goto(x,-y+280)         square.stamp()         square.goto(-x,-y+280)         square.stamp()     if i % 4 == 0:         x = 30*(j+1)         circle.color('red')         circle.goto(-x,-y+280)         circle.stamp()         circle.goto(x,-y+280)         circle.stamp()         k += 2     if i % 4 == 3:         x = 30*(j+1)         circle.color('yellow')         circle.goto(-x,-y+280)         circle.stamp()         circle.goto(x,-y+280)         circle.stamp() square.color('brown') for i in range(17,20):     y = 30*i     for j in range(3):         x = 30*j         square.goto(x,-y+280)         square.stamp()         square.goto(-x,-y+280)         square.stamp() turtle.exitonclick()

运行：

3、使用Turtle绘制复杂圣诞树

新建tree3.py，输入以下代码

#导入所依赖的库 from turtle import * import random import time   n = 80.0 #设置速度快 speed("fastest") #背景颜色 海贝壳色，偏粉色 screensize(bg='seashell') left(90) forward(3*n) color("orange", "yellow") begin_fill() left(126)   for i in range(5):     forward(n/5)     right(144)     forward(n/5)     left(72) end_fill() right(126)   color("dark green") backward(n*4.8) def tree(d, s):     if d <= 0: return     forward(s)     tree(d-1, s*.8)     right(120)     tree(d-3, s*.5)     right(120)     tree(d-3, s*.5)     right(120)     backward(s) tree(15, n) backward(n/2)   for i in range(200):     a = 200 - 400 * random.random()     b = 10 - 20 * random.random()     up()     forward(b)     left(90)     forward(a)     down()     if random.randint(0, 1) == 0:             color('tomato')     else:         color('wheat')     circle(2)     up()     backward(a)     right(90)     backward(b) time.sleep(60)

运行：