import ExifTags
import Image
img = Image.open(filename)
print(img._getexif().items())
exif=dict((ExifTags.TAGS[k], v) for k, v in img._getexif().items() if k in ExifTags.TAGS)
if not exif['Orientation']:
  img=img.rotate(90, expand=True)
  img.thumbnail((1000,1000), Image.ANTIALIAS)
  img.save(output_fname, "JPEG")