Sharpening images

from PIL import ImageEnhance

def _sharpen(image, sharpness=1.6):
    """
	Returns a sharpened copy of an image. 
	
	Resizing down or thumbnailing your images with PIL.Image tends to make them blurry. I apply this snippet to such images in order to regain some sharpness.
	"""
    sharpener = ImageEnhance.Sharpness(image)
    sharpened_image = sharpener.enhance(sharpness)
    return sharpened_image