使用python画一颗圣诞树

# -*- coding: utf-8 -*-
# @Time    : 18-12-26 上午9:32
# @Author  : Felix Wang

import turtle

# 定义圣诞树的绿叶函数
def tree(d, s):
    if d <= 0:
        return
    turtle.forward(s)
    tree(d - 1, s * .8)
    turtle.right(120)
    tree(d - 3, s * .5)
    turtle.right(120)
    tree(d - 3, s * .5)
    turtle.right(120)
    turtle.backward(s)

n = 100
""" 设置绘图速度
'fastest' :  0
'fast'    :  10
'normal'  :  6
'slow'    :  3
'slowest' :  1
"""
turtle.speed('fastest') # 设置速度

turtle.left(90)
turtle.forward(3 * n)
turtle.color("orange", "yellow")
turtle.left(126)

# turtle.begin_fill()
for i in range(5):
    turtle.forward(n / 5)
    turtle.right(144)
    turtle.forward(n / 5)
    turtle.left(72)
    turtle.end_fill()
turtle.right(126)
turtle.color("dark green")
turtle.backward(n * 4.8)

# 执行函数
tree(15, n)
turtle.backward(n / 5)

效果图：