diy1.py

import turtle

pen=turtle.Pen()
screen=turtle.Screen()
screen.bgcolor("black")
i=1
pen.speed(100000000000000000000000000000000000000000000000000000000000000000000000)
colors=["red","blue","green","yellow"]
for i in range(1,690):
    pen.pencolor(colors[i%4])
    pen.forward(i)
    pen.right(91)
pen.hideturtle()
turtle.done()