Python挑选文件夹里宽大于300图片的方法

import sys
import os
sys.path.append('PIL')
from PIL import Image as im
path = '/home/hualun/桌面/img/'
new_path = '/home/hualun/桌面/img2/'
for x in os.listdir(path):
  if x.endswith('.jpg'):
    file = im.open(path+x)
    width = file.size[0]
    if width > 300:
      os.rename(path+x, new_path+x)
      print "%s 移动完成.." % x