玫瑰花
import turtle
import time
turtle.speed(5)

设置初始地位

turtle.penup()
turtle.left(90)
turtle.fd(200)
turtle.pendown()
turtle.right(90)

花蕊

turtle.fillcolor("red")
turtle.begin_fill()
turtle.circle(10,180)
turtle.circle(25,110)
turtle.left(50)
turtle.circle(60,45)
turtle.circle(20,170)
turtle.right(24)
turtle.fd(30)
turtle.left(10)
turtle.circle(30,110)
turtle.fd(20)
turtle.left(40)
turtle.circle(90,70)
turtle.circle(30,150)
turtle.right(30)
turtle.fd(15)
turtle.circle(80,90)
turtle.left(15)
turtle.fd(45)
turtle.right(165)
turtle.fd(20)
turtle.left(155)
turtle.circle(150,80)
turtle.left(50)
turtle.circle(150,90)
turtle.end_fill()

花瓣1

turtle.left(150)
turtle.circle(-90,70)
turtle.left(20)
turtle.circle(75,105)
turtle.setheading(60)
turtle.circle(80,98)
turtle.circle(-90,40)

花瓣2

turtle.left(180)
turtle.circle(90,40)
turtle.circle(-80,98)
turtle.setheading(-83)

叶子1

turtle.fd(30)
turtle.left(90)
turtle.fd(25)
turtle.left(45)
turtle.fillcolor("green")
turtle.begin_fill()
turtle.circle(-80,90)
turtle.right(90)
turtle.circle(-80,90)
turtle.end_fill()
turtle.right(135)
turtle.fd(60)
turtle.left(180)
turtle.fd(85)
turtle.left(90)
turtle.fd(80)

叶子2

turtle.right(90)
turtle.right(45)
turtle.fillcolor("green")
turtle.begin_fill()
turtle.circle(80,90)
turtle.left(90)
turtle.货币符号circle(80,90)
turtle.end_fill()
turtle.left(135)
turtle.fd(60)
turtle.left(180)
turtle.fd(60)
turtle.right(90)
turtle.circle(200,60)
turtle.done()
5、黑白树

这个比较复杂，画的工夫较长

from turtle import *

设置色调模式是RGB:

colormode(255)
lt(90)
lv = 14
l = 120
s = 45
width(lv)

初始化RGB色彩:

r = 0
g = 0
b = 0
pencolor(r, g, b)
penup()
bk(l)
pendown()
fd(l)
def draw_tree(l, level):

global r, g, b# save the current pen widthw = width()# narrow the pen widthwidth(w * 3.0 / 4.0)# set color:r = r + 1g = g + 2b = b + 3pencolor(r % 200, g % 200, b % 200)l = 3.0 / 4.0 * llt(s)fd(l)if level < lv:    draw_tree(l, level + 1)bk(l)rt(2 * s)fd(l)if level < lv:    draw_tree(l, level + 1)bk(l)lt(s)# restore the previous pen widthwidth(w)

speed("fastest")
draw_tree(l, 4)
done()