Raspberry pi Switch-CAMERA VEC No5

import RPi.GPIO as GPIO
import time
import picamera
import datetime
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
sw_1 = 24
sw_2 = 27
count= 0
GPIO.setup(sw_1,GPIO.IN,pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(sw_2,GPIO.IN,pull_up_down=GPIO.PUD_UP)
GPIO.add_event_detect(sw_1,GPIO.RISING)
GPIO.add_event_detect(sw_2,GPIO.FALLING)
camera = picamera.PiCamera()
while(1):
    if GPIO.event_detected(sw_1):
        print("SW1")
        img_name="/home/pi/Desktop/SW1/"
        img_name+=str(datetime.datetime.now())
        img_name+=".jpg"
        camera.capture(img_name)
    if GPIO.event_detected(sw_2):
        count+=1
        print("SW2")
        img_name="/home/pi/Desktop/SW2/Image"
        img_name+= str(count).zfill(2)
        img_name+=".jpg"
        camera.capture(img_name)