Micropython test for neopixels with arguments using "ampy run".

neopixelTestWithArgs.py

import time,sys
from machine import Pin
from neopixel import NeoPixel

color = [0,64,64]
if len(sys.argv) >= 4:
	try:
		col = [int(sys.argv[1]),int(sys.argv[2]),int(sys.argv[3])]
		color = col
	except:
		print("Color invalid")
		print("Usage: [R G B [NPixels]]")
		sys.exit()

NPIXELS = 64
if len(sys.argv) >= 5:
	try:
		NPIX = int(sys.argv[4])
		NPIXELS = NPIX
	except:
		print("Number of pixels invalid")
		print("Usage: [R G B [NPixels]]")
		sys.exit()

monPixel = NeoPixel(Pin(14), NPIXELS)
monPixel.fill((0,0,0))
monPixel.write()

pixels = [x for x in range(0,NPIXELS)]
pixels += [x for x in range(0,NPIXELS-1)][::-1]
for pix in pixels:
	if pix>0:
		monPixel[pix-1] = (0,0,0)
	monPixel[pix] = color
	monPixel.write()
	time.sleep_ms(100)
for pix in [x for x in range(0,NPIXELS)][::-1]:
	monPixel[pix] = (0,0,0)
	monPixel.write()
	time.sleep_ms(100)
for pix in [x for x in range(0,int(NPIXELS/2)+1)]:
	monPixel[pix] = color
	monPixel[NPIXELS-pix-1] = color
	monPixel.write()
	time.sleep_ms(100)