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# todo animation
import time
import random
from dotpack import DotPack


pack = DotPack()

def snow_crash():
    '''
    you want to try some Snow Crash?
    
    generate a frame
    '''
    for x in range(16):
        for y in range(16):
            if random.randint(0,1) == 1:
                pack.set_pixel(x,y, 'white')
            else:
                pack.set_pixel(x,y, 'black')

while True:
    time.sleep(0.2)
    snow_crash()

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# 直接控制 neopiexl 256 颗