Код:

from math import log
from turtle import *

first_color = 'red'
second_color = 'blue'
pensize(20)
speed(0)
for x in range(1,200):
color(first_color)
circle(100, int(log(x)))
first_color, second_color = second_color, first_color

Цей код на repl.it

https://repl.it/@ttolich/Circus-hoop