A method for temporarily uploading images in Python

It's a very simple code. Let's record it.

    import Image

    image = Image.open('a.jpg')

    import cStringIO

    buf = cStringIO.StringIO()

    image.save(buf, image.format,quality=75)

    data = buf.getvalue()

    a = u.writeFile('/this/logo.jpg',data,True)

Using django, users upload images and transfer them to other servers. However, the transferred image needs to be processed, but I wonder if the quality setting can be saved when it is not image.save(). This is written when saved into memory, and then submitted directly to the image server.