Play song when switch connected to GPIO is pushed

raspi_push_switch_to_play_music.py

#!/usr/local/bin/python
# -*- coding: utf-8 -*-

from __future__ import print_function

import RPi.GPIO as GPIO
import os
import time
import random
import shlex
import subprocess

# Pin Number
PIN = 19

GPIO.setmode(GPIO.BCM)
GPIO.setup(PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
last_pin_status = 0

SONG_DIR = '/home/pi/Music/'
SONG_LIST = ['song01.wav', 'song02.wav', 'song03.wav']


def play_song():
    song = random.choice(SONG_LIST)
    song_path = os.path.join(SONG_DIR, song)
    command = 'aplay %s' % (song_path)
    print(command)
    subprocess.Popen(shlex.split(command))


while True:
    pin_status = GPIO.input(PIN)
    if last_pin_status == 1 and pin_status == 0:
        play_song()

    last_pin_status = pin_status
    time.sleep(0.1)

GPIO.cleanup()