Pix-G Gif Cam with IR Flash Attachment

import picamera
from time import sleep
import time
import RPi.GPIO as GPIO
from os import system
import os
import random, string

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
button = 19 #Button GPIO Pin

GPIO.setup(button, GPIO.IN, pull_up_down=GPIO.PUD_UP)
led_1 = 12 #Status LED GPIO Pin
GPIO.setup(led_1, GPIO.OUT)
led_2 = 21 #ON/OFF LED Pin
GPIO.setup(led_2, GPIO.OUT)

flash = 13
GPIO.setup(flash, GPIO.OUT)


########################
### Variables Config ###
########################
num_pics = 8 #Number of pictures to take in Gif
gif_delay = 15 #How much delay in between those pictures (in hundredths of a second)    

camera = picamera.PiCamera()
camera.resolution = (540, 405)
camera.rotation = 90
#camera.brightness = 70
camera.image_effect = 'none'
GPIO.output(led_2, 1)
print('System Ready')

def random_generator(size=10, chars=string.ascii_uppercase + string.digits):
    return ''.join(random.choice(chars) for x in range(size))

while True:
    input_state = GPIO.input(button) # Sense the button
    randomstring = random_generator()
    if input_state == False:
	
	GPIO.output(flash, 1)

        GPIO.output(led_1, 1)
        print('Gif Started')
        for i in range(num_pics):
    		camera.capture('image{0:04d}.jpg'.format(i))
        filename = '/home/pi/gifcam/gifs/' + randomstring + '-0'

	GPIO.output(flash, 0)

        GPIO.output(led_1, 0)
    	print('Processing')
        graphicsmagick = "gm convert -delay " + str(gif_delay) + " " + "*.jpg " + filename + ".gif" 
        os.system(graphicsmagick)
        print('Done')
        print('System Ready')
    else :
        # Switch on LED
        GPIO.output(led_1, 1)
        time.sleep(0.35)
        GPIO.output(led_1, 0)
        time.sleep(0.35)