What is missing in this code

Question

from turtle import *
import colorsys
bgcolor('black')
speed(0)
pensize(3)

hue = 0.0
for i in range(300):
color = colorsys.hsv_to_rgb(hue,1,1)
pencolor(color)
hue += 0.005
right(i)
circle(50,i)
forward(i)
left(91)

done()
https://code.sololearn.com/W80RBjBC5L27/?ref=app

Answer 1

What should it do?
What do the pasted and the linked codes have to do with each other?

Answer 2

My question is about the codeline number 9

Answer 3

Of which code? The pasted or the linked?
Pls review the question and try to make it clear. I can't look for something missing in a code which purpose I don't know.