EXIF.py

class ImageOps:
    """Module that holds all image operations. Since there's no state, 
    everything is a classmethod."""
    
    @classmethod
    def adjust_image_orientation(cls, image):
        """Since the iPhone will store an image on its side but with EXIF
        data stating that it should be rotated, we need to find that
        EXIF data and correctly rotate the image before storage."""
        
        if hasattr(image, '_getexif'):
            exif = image._getexif()
            if exif:
                for tag, value in exif.items():
                    decoded = TAGS.get(tag, tag)
                    if decoded == 'Orientation':
                        if value == 6:
                            image = image.rotate(-90)
                        if value == 8:
                            image = image.rotate(90)
                        if value == 3:
                            image = image.rotate(180)
                        break
        return image