switches.py

# As I don't have the sensor light, what I'll do is the same setup without it, then I'll record the first button and second button actions and they will do the following:

# 1. None of the buttons pressed: Red is open.
# 2. Button 1 pressed: Green is open.
# 3. Button 2 pressed: Blue is open.

# The two buttons down will turn off the program.
# Touching one button or another will trigger an action, that one will be registered and will be saved into a file.

import RPi.GPIO as GPIO
import time

red_pin = 17
green_pin = 27
blue_pin = 22
first_button = 24
second_button = 25

def define_basic_LED_information():
    GPIO.setmode(GPIO.BCM)

    GPIO.setup(red_pin, GPIO.OUT)
    GPIO.setup(green_pin, GPIO.OUT)
    GPIO.setup(blue_pin, GPIO.OUT)

def configure_buttons():
    private_configure_buttons(True)
    private_configure_buttons(False)

def first_button_pressed(pin):
    button_did_press(True)    

def second_button_pressed(pin):
    button_did_press(False)

# Helpers

def button_did_press(first):
    button_pressed = "First" if first else "Second"
    string = button_pressed + " button pressed at time: " + time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime())

    print(string)

    file = open( "buttons.txt", "a")
    file.write(string + "\n")
    file.close()

def private_configure_buttons(first):
    pin = first_button if first else second_button
    action = first_button_pressed if first else second_button_pressed

    GPIO.setup(pin, GPIO.IN, pull_up_down = GPIO.PUD_UP)
    GPIO.add_event_detect(pin, GPIO.FALLING)
    GPIO.add_event_callback(pin, action)

def build_RGB_value(red, green, blue):
    GPIO.output(red_pin, red)
    GPIO.output(green_pin, green)
    GPIO.output(blue_pin, blue)    

if __name__ == "__main__":

    print("With this program you'll be able to do some combinations of colors by pressing the buttons.")

    define_basic_LED_information()
    configure_buttons()

    alive = True

    try:
        while alive:
            if not GPIO.input(first_button) and not GPIO.input(second_button):
                alive = False
            elif not GPIO.input(first_button):
                build_RGB_value(0, 1, 0)
            elif not GPIO.input(second_button):
                build_RGB_value(0, 0, 1)
            else:
                build_RGB_value(1, 0, 0)
    finally:
        build_RGB_value(0, 0, 0)
        GPIO.cleanup()