How do I read image data from a URL in Python?

What I'm trying to do is fairly simple when we're dealing with a local file, but the problem comes when I try to do this with a remote URL. Basically, I'm trying to create a PIL image object from a file pulled from a URL. Sure, I could always just fetch the URL and store it in a temp file, then open it into an image object, but that feels very inefficient. Here's what I have: Image.open(urlopen(ur