1、PIL包推荐Pillow。

2、源码：

#encoding=utf-8
#author: walker
#date: 2014-05-15
#function: 更改图片尺寸大小
import os
import os.path
from PIL import Image
‘‘‘
filein:  输入图片
fileout: 输出图片
width: 输出图片宽度
height:输出图片高度
type:输出图片类型（png, gif, jpeg...）
‘‘‘
def ResizeImage(filein, fileout, width, height, type):
    img = Image.open(filein)
    out = img.resize((width, height),Image.ANTIALIAS) #resize image with high-quality
    out.save(fileout, type)
if __name__ == "__main__":
    filein = r‘image\test.png‘
    fileout = r‘image\testout.png‘
    width = 60
    height = 85
    type = ‘png‘
    ResizeImage(filein, fileout, width, height, type)

*** walker * 2014-05-15 ***

本文出自 “walker的流水账” 博客，请务必保留此出处http://walkerqt.blog.51cto.com/1310630/1411883

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用Python更改图片尺寸大小