Blinkt example that mimic Cylon eyes

pylon.py

#!/usr/bin/env python
import time
import blinkt

blinkt.set_clear_on_exit()
blinkt.set_brightness(0.1)

x = 0
d = 1

while True:
  blinkt.clear()
  blinkt.set_pixel(x,128,0,0,0.5)
  y = x - d
  if y > 0 or y < 7:
    blinkt.set_pixel(y,255,0,0,0.1)
  if x > 6:
    d = -1
  if x < 1:
    d = 1
  x += d
  blinkt.show()
  time.sleep(0.1)