The “Why’d you push that button” button

whynot.py

#Step 1: Import the libraries we need
import pygame.mixer
import RPi.GPIO as GPIO
import glob
import random
import time

#Step 2: Fire up the sound mixer
pygame.mixer.init()

#Step 3: Register the GPIO pin we’ll be observing, and specify that want to “pull up” its voltage
GPIO.setmode(GPIO.BCM)
GPIO.setup(4, GPIO.IN, pull_up_down = GPIO.PUD_UP)

#Step 4: Specify our folder of MP3s
soundfiles = glob.glob(“/home/pi/Desktop/Why-2/*.mp3”)

#Step 5: Here’s our play function!
def play(pin):
	print(“playing”)
	pygame.mixer.music.load(random.choice(soundfiles))
	pygame.mixer.music.play(1)

#Step 6: Print something when the script starts so we know it’s doing something.
print(“ready”)

#Step 7: Actually detect the button press
GPIO.add_event_detect(4, GPIO.FALLING, callback = play, bouncetime = 200)

#Step 8: Loop forever so the program stays alive while waiting for button presses
while 1:
	time.sleep(1)