python转换图片

使用python进行图片的格式转换,用到的库:PIL.Image

import os
from PIL import Image

path = "/home/zhao/project/picture_bak/JPEGImages"
pictures = os.listdir(path)
for file in pictures:
f,e = os.path.splitext(file)
outfile = f + ".bmp"
try:
Image.open(path+"/"+file).save("/home/zhao/project/picture_bak/BMPImages"+"/"+outfile)
except IOError:
print 'cannot convert',file