import pygame
import pygame.camera
import sys

pygame.camera.init()
if len(pygame.camera.list_cameras()) > 0:
    cam = pygame.camera.Camera(pygame.camera.list_cameras()[-1],(640,480))
    cam.start()

def getSnapshot():
    if cam is not None:
        img = cam.get_image()
        pygame.image.save(img,"filename.jpg")

import serial
ser= serial.Serial('/dev/ttyUSB0')
ser= serial.Serial('/dev/bus/usb/002/003')