import turtle
import time
angle = 270
def tai():
r=200
turtle.penup()
turtle.goto(0,0)
turtle.setheading(angle)
turtle.fd(r)
turtle.pendown
turtle.right(90)
turtle.fillcolor("white")
turtle.begin_fill()
turtle.circle( -r / 2 , 180)
turtle.circle( r / 2 , 180)
turtle.circle( 180)
turtle.end_fill()
turtle.fillcolor("black")
turtle.begin_fill()
turtle.circle(r , 180)
turtle.right(180)
turtle.circle( -r / 2 , 180)
turtle.circle( r / 2 , 180)
turtle.end_fill()
turtle.penup()
turtle.setheading(angle)
turtle.fd(-r /2)
turtle.pendown()
turtle.dot(r / 4, "white")
turtle.penup()
turtle.fd(-r)
turtle.pendown()
turtle.dot(r / 4, "black")
turtle.penup
turtle.tracer(0)
for i in range(1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000):
tai ()
turtle.update()
time sleep(0.01)
turtle.clear()
angle += 1
