随機數實作靓麗貝殼圖案

import turtle
import random


turtle.speed(0)
turtle.bgcolor("black")
turtle.goto(0,-200)
turtle.colormode(255)
for i in range(200):
    r = random.randint(0,255)
    g = random.randint(0,255)
    b = random.randint(0,255)
    turtle.color(r, g, b)
    turtle.circle(i*2)
turtle.done()           

改動一處代碼，實作截然不同的效果，改動指令：turtle.circle(r,d) 其中r是指半徑，d指畫圓的弧度

import turtle
import random


turtle.speed(0)
turtle.bgcolor("black")
turtle.goto(0,-200)
turtle.colormode(255)
for i in range(200):
    r = random.randint(0,255)
    g = random.randint(0,255)
    b = random.randint(0,255)
    turtle.color(r, g, b)
    turtle.circle(i*2, 270)
turtle.done()