e.g.:
#! python 3
import rhinoscriptsyntax as rs
import random
r=1.2
rs.EnableRedraw(False)
for i in range(20):
rand = random.random()*360
cir = rs.AddCircle([4*i, 0,0], r)
rs.RotateObject(cir,[0,0,0],rand)
r*=0.95
angle = 0
for j in range(1, 9*i):
cir2 = rs.CopyObject(cir)
angle += 360/(9*i)
rs.RotateObject (cir2, [0,0,0], angle,[0,0,1], False)
yields:
