from turtle import *
from superturtle.animation import animate
from superturtle.movement import restore_state_when_finished

DOTSIZE = 10 

def electron(radius):
    """Assumes the turtle already has the proper heading. 
    """
    with restore_state_when_finished():
        penup()
        forward(radius)
        pendown()
        dot(DOTSIZE)

for frame in animate(360, loop=True):
    with frame.rotate(0, 359, cycles=2):
        electron(100)
        right(180)
        electron(100)
    with frame.rotate(0, 359):
        electron(140)
        right(180)
        electron(140)

input()