本文实例讲述了python实现图片变亮或者变暗的方法。分享给大家供大家参考。具体实现方法如下：

import Image # open an image file (.jpg or.png) you have in the working folder im1 = Image.open("angelababy.jpg") # multiply each pixel by 0.9 (makes the image darker) # works best with .jpg and .png files, darker < 1.0 < lighter # (.bmp and .gif files give goofy results) # note that lambda is akin to a one-line function im2 = im1.point(lambda p: p * 0.5) # brings up the modified image in a viewer, simply saves the image as # a bitmap to a temporary file and calls viewer associated with .bmp # make certain you have associated an image viewer with this file type im2.show() # save modified image to working folder as Audi2.jpg im2.save("angelababy2.jpg")

运行效果如下所示：

希望本文所述对大家的Python程序设计有所帮助。