RGB LED GPIO Raspberry PI3

RGB.py

import random, time
import RPi.GPIO as GPIO
import colorsys
 
RUNNING = True
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

blue = 16
green = 20
red = 21
 
GPIO.setup(red, GPIO.OUT)
GPIO.setup(green, GPIO.OUT)
GPIO.setup(blue, GPIO.OUT)


Freq = 100
 
RED = GPIO.PWM(red, Freq)
RED.start(100)
GREEN = GPIO.PWM(green, Freq)
GREEN.start(100)
BLUE = GPIO.PWM(blue, Freq)
BLUE.start(100)

outval = 128

def wheel_color(position):
    """Get color from wheel value (0 - 384)."""
    
    if position < 0:
        position = 0
    if position > 384:
        position = 384

    if position < 128:
        r = 127 - position % 128
        g = position % 128
        b = 0
    elif position < 256:
        g = 127 - position % 128
        b = position % 128
        r = 0
    else:
        b = 127 - position % 128
        r = position % 128
        g = 0

    return r, g, b

try:
	while(True):
		for pos in range(0,385):
			r, g, b = wheel_color(pos)
			print (r, g, b)
			percenttestr = (r/128.0)*100.0
			percenttestg = (g/128.0)*100.0
			percenttestb = (b/128.0)*100.0
			print (percenttestr)
			print (percenttestg)
			print (percenttestb)
			RED.ChangeDutyCycle(percenttestr)
			GREEN.ChangeDutyCycle(percenttestg)
			BLUE.ChangeDutyCycle(percenttestb)
			time.sleep(0.1)

			
except KeyboardInterrupt:
	GPIO.cleanup()