利用Python批量压缩png方法实例（支持过滤个别文件与文件夹）

import os,sys
import os.path
rootdir=sys.path[0]
 
#需要过滤的文件
notActionFile = ["choose_bg1.png"]
#需要过滤的文件夹
notActionPath = ["test"]
 
#需要删除的文件
needDeleteFile = ["s2.png"]
 
def file_extension(path): 
 return os.path.splitext(path)[1] 
 
for parent,dirnames,filenames in os.walk(rootdir):
 for filename in filenames:
  fullPath = os.path.join(parent,filename)
  #删除文件
  for deleteFile in needDeleteFile:
   if filename == deleteFile:  
    os.remove(fullPath)    
  isFilter = False
  #过滤文件压缩
  for noActionName in notActionFile: 
   if noActionName == filename:
    isFilter = True
  #过滤文件夹压缩    
  for onePath in notActionPath:
   lastPath = fullPath.split('\\')[-2]
   if lastPath == onePath:
    isFilter = True      
  if file_extension(fullPath) == ".png" and isFilter == False:
   #print "action"  
   os.system("pngquant -f --ext .png --quality 50-80 \"" + fullPath + "\"")
   print fullPath