GPIO Trigger Wav on Raspberry PI

#!/usr/bin/python3

import sys
import signal
import RPi.GPIO as GPIO
import pyaudio
import wave

GPIO.setmode(GPIO.BCM)

# GPIO 23 (pin 16) & 24 (pin 18) set to HIGH, with both ports should be
# wired to connect to GND on button press. The pins on EITHER SIDE of
# these are GND.
GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(24, GPIO.IN, pull_up_down=GPIO.PUD_UP)

# define callback
def callback(in_data, frame_count, time_info, status):
    print ("Callback")
    data = wf.readframes(frame_count)
    return (data, pyaudio.paContinue)

def gpio23(channel):
    print ("Pin 16 to ground detected")

def gpio24(channel):
    print ("Pin 18 to ground detected")

def signal_handler(sig, frame):
    print ("Cleanup")
    GPIO.cleanup()
    sys.exit(0)

p = pyaudio.PyAudio()
wf = wave.open('sounda.wav', 'rb')
stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),
                channels=wf.getnchannels(),
                rate=wf.getframerate(),
                output=True,
                stream_callback=callback)

# start the sound stream
stream.start_stream()

GPIO.add_event_detect(23, GPIO.FALLING, callback=gpio23, bouncetime=300)
GPIO.add_event_detect(24, GPIO.FALLING, callback=gpio24, bouncetime=300)

print("Pausing...")
signal.signal(signal.SIGINT, signal_handler)
signal.pause()
print("Here I am")

GPIO.cleanup()           # clean up GPIO on normal exit