import turtle

xSIZE=300 #how big is one on screen
ySIZE=200 #how big is one on screen
LEVEL=128 #how many iterations before fail
xcenter=0
xscale=1.5
ycenter=0
yscale=1.0

def mandel(c):
  z=0.0
  for i in range(LEVEL):
    z=z*z+c
    if abs(z) > 256.0: return False
  return True


turtle.speed("fastest")
turtle.up()
for x in range(-xSIZE,xSIZE+1):
  for y in range(-ySIZE,ySIZE+1):
    c= float(x)*xscale/xSIZE+xcenter + (float(y)*yscale/ySIZE+ycenter)*1.0j
    if mandel(c):
       turtle.goto(x,y)
       turtle.dot(1)


input("done?")