Here is the complete CircuitPython version of the Quick Draw code.

```# Circuit Playground Express Quick Draw
#
# Who's faster?
#
# Author: Carter Nelson
import time
import random
import board

SHORTEST_DELAY = 1  # seconds
LONGEST_DELAY  = 10 #    "
PLAYER_PIXELS = {
1 : (0,1,2,3,4),
2 : (5,6,7,8,9)
}

def show_outcome(player, winner):
# Turn them all off
cpx.pixels.fill(0)

# Set pixel color
if winner:
color = 0x00FF00
else:
color = 0xFF0000

# Show which player won/lost
for p in PLAYER_PIXELS[player]:
cpx.pixels[p] = color

# Play a little tune
if winner:
cpx.play_tone(800, 0.2)
cpx.play_tone(900, 0.2)
cpx.play_tone(1400, 0.2)
cpx.play_tone(1100, 0.2)
else:
cpx.play_tone(200, 1)

# Sit here forever
while True:
pass

# Seed the random function with noise

seed  = a4.value
seed += a5.value
seed += a6.value
seed += a7.value

random.seed(seed)

# Wait a random amount of time
count_time = random.randrange(SHORTEST_DELAY, LONGEST_DELAY+1)
start_time = time.monotonic()
while time.monotonic() - start_time < count_time:
# Check if player draws too soon
if cpx.button_a:
show_outcome(1, False)
if cpx.button_b:
show_outcome(2, False)

# Turn on all the NeoPixels
cpx.pixels.fill(0xFFFFFF)

# Check for player draws
while True:
if cpx.button_a:
show_outcome(1, True)
if cpx.button_b:
show_outcome(2, True)```

This guide was first published on Dec 29, 2016. It was last updated on Dec 29, 2016.