# spiral_rainbow.py
from turtle import *

speed('fastest')
pensize(3)
bgcolor('black')

pencolor('red')
for i in range(60):
    forward(i)
    left(91)

pencolor('orange')
for i in range(60):
    forward(60 + i)
    left(91)

pencolor('yellow')
for i in range(60):
    forward(120 + i)
    left(91)

pencolor('green')
for i in range(60):
    forward(180 + i)
    left(91)

pencolor('blue')
for i in range(60):
    forward(240 + i)
    left(91)

pencolor('purple')
for i in range(60):
    forward(300 + i)
    left(91)

done()