Rainbow Circle using Python

 

import turtle

t = turtle.Turtle()

t.speed(10)

colors = ['red', 'orange', 'yellow',

          'green', 'blue', 'indigo',

          'violet']

turtle.bgcolor('black')

for i in range(36):

    t.color(colors[i % 7])

    t.circle(100)

    t.right(10)

turtle.done()