python turtle作品（螺旋+养眼图）

python turtle作品（螺旋+养眼图）

螺旋图：

import turtle
t = turtle.Turtle()
t.speed(0)
i = 1
t.clear()
colours=["red","orange","yellow","green","cyan","blue","purple"]
while True:
    t.width(5)
    t.forward(i)
    t.left(100)
    t.color(colours[i%7])
    i += 1

养眼图

import turtle
t = turtle.Turtle()
t.speed(0)
t.color("green")
for i in range(500):
    t.fd(i + i)
    t.left(90)
input()