用python给文件夹下所有图片进行缩放处理

#! /usr/bin/env python 
# -*- coding: UTF-8 -*- 
#@author zcwang3@gmail.com
#@version 2010-10-20 15:47
#图片处理模块（缩放）

import BaseUtil
import os
import Image

srcImgFolder = srcImgFolder = r"D:\javaResize"
def resizeFold(dir_proc):
    for file in os.listdir(dir_proc):
        fullFile = os.path.join(dir_proc, file)
        if os.path.isdir(fullFile):
            resizeFold(fullFile)
            continue
        
        #带有下划线的目标图片不需要处理
        if fullFile.find("_") != -1:
            continue
        
        #正常图片
        srcImgFullFileName = fullFile
        BaseUtil.outputInfoMessage("INFO:process file %s" %(os.path.join(dir_proc, file)))
        #处理文件
        if os.path.isfile(srcImgFullFileName):
            folderPath = srcImgFullFileName[:srcImgFullFileName.rfind(os.sep)]
            fileName = srcImgFullFileName[srcImgFullFileName.rfind("\\")+1:]
            
            img = Image.open(srcImgFullFileName)
#            img.show()
            width,height = img.size
            targetWidthArray = (100,120,240,400,640)
            for targetWidth in targetWidthArray:
                targetImg = img.resize(
                           (targetWidth, targetWidth * height / width),
                           Image.ANTIALIAS
                           )
                newFileName = fileName.split(".")[0] + "_" + str(targetWidth) + "." + fileName.split(".")[1]
                targetImg.save(folderPath + os.sep + newFileName, 'jpeg')
                
if __name__ == "__main__":
    resizeFold(srcImgFolder)