【python】turtle龟绘制无敌螺旋转

turtle龟绘制无敌螺旋转，转，转！

from turtle import *
from time import *
import turtle
t = Turtle()
t.pensize(2)
turtle.bgcolor("black")
colors = ["red", "yellow", 'purple', 'blue']
t._tracer(False)
for x in range(400):
    t.forward(2*x)
    t.color(colors[x % 4])
    t.left(91)
t._tracer(True)
done()

效果图：