rgb7seg_countupdown

#!/usr/bin/env python3

import random
from time import sleep

from rgb7seg import NumberDisplay

sleeptime = .25

COLORS = {
    # name      hue         sat  val
    'white':   (0,          0,   0.01),
    'red':     (0,          1,   0.01),
    'yellow':  (0.16666666, 1,   0.01),
    'lime':    (0.33333333, 1,   0.01),
    'aqua':    (0.5,        1,   0.01),
    'blue':    (0.66666666, 1,   0.01),
    'purple':  (0.83333333, 1,   0.01)
}

colors = [
    COLORS['red'], COLORS['lime'], COLORS['blue'], COLORS['yellow'], COLORS['red'], COLORS['aqua'], COLORS['lime'], COLORS['white'], COLORS['purple'], COLORS['lime'], COLORS['red'], COLORS['aqua'], COLORS['white'], COLORS['blue'], COLORS['lime'], COLORS['red'], COLORS['purple'], COLORS['yellow'], COLORS['aqua']
]
colors.reverse()

numeral = NumberDisplay()

def rand_color():
    while True:
        color = random.choice(list(COLORS.keys()))
        if color != 'black':
            break
    return color

for i in range(1, 10):
    numeral.display(i, colors.pop())
    sleep(sleeptime)

numeral.display(0, colors.pop())
sleep(sleeptime)

for i in range(9, 0, -1):
    numeral.display(i, colors.pop())
    sleep(sleeptime)

numeral.display()