python实现批量修改图片格式和尺寸

#coding=utf-8 
import sys 
import os, glob 
import platform 
import win32file,win32con 
from PIL import Image 
from send2trash import send2trash 
 
reload(sys) 
sys.setdefaultencoding('utf-8') 
 
#new_width =2048 
#width =int(raw_input("the width U want:")) 
#imgslist = glob.glob(path+'/*.*') 
 
ShuiPing="水平" 
ShiZhuang="矢状" 
GuanZhuang="冠状" 
 
def Py_Log(_string): 
  print "----"+_string.decode('utf-8')+"----" 
 
def is_windows_system(): 
  return 'Windows' in platform.system() 
 
def is_hiden_file(file_Path):  
  if is_windows_system():  
    fileAttr = win32file.GetFileAttributes(file_Path) 
    if fileAttr & win32con.FILE_ATTRIBUTE_HIDDEN :  
      return True  
    return False  
  return False 
 
def remove_hidden_file(file_path): 
  send2trash(file_path) 
  print "Delete hidden file path:"+file_path 
 
def astrcmp(str1,str2): 
  return str1.lower()==str2.lower() 
 
def resize_image(img_path): 
  try: 
    mPath, ext = os.path.splitext(img_path) 
    if (astrcmp(ext,".png") or astrcmp(ext,".jpg")): 
      img = Image.open(img_path) 
      (width,height) = img.size 
       
      if(width != new_width): 
        new_height = int(height * new_width / width) 
        out = img.resize((new_width,new_height),Image.ANTIALIAS) 
        new_file_name = '%s%s' %(mPath,ext) 
        out.save(new_file_name,quality=100) 
        Py_Log("图片尺寸修改为："+str(new_width)) 
      else: 
        Py_Log("图片尺寸正确，未修改") 
    else: 
      Py_Log("非图片格式") 
  except Exception,e: 
    print e 
 
#改变图片类型 
def change_img_type(img_path): 
  try: 
    img = Image.open(img_path) 
    img.save('new_type.png') 
  except Exception,e: 
    print e 
 
#处理远程图片 
def handle_remote_img(img_url): 
  try: 
    request = urllib2.Request(img_url) 
    img_data = urllib2.urlopen(request).read() 
    img_buffer = StringIO.StringIO(img_data) 
    img = Image.open(img_buffer) 
    img.save('remote.jpg') 
    (width,height) = img.size 
    out = img.resize((200,height * 200 / width),Image.ANTIALIAS) 
    out.save('remote_small.jpg') 
  except Exception,e: 
    print e 
 
def rename_forder(forder_path): 
  Py_Log("------------rename_forder--------------------------") 
  names = os.path.split(forder_path) 
  try: 
    if(unicode(ShuiPing) in unicode(names[1],'gbk')): 
      os.rename(forder_path,names[0]+"\\"+"01") 
      Py_Log(names[1]+"-->"+"01") 
    if(unicode(ShiZhuang) in unicode(names[1],'gbk')): 
      os.rename(forder_path,names[0]+"\\"+"02") 
      Py_Log(names[1]+"-->"+"02") 
    if(unicode(GuanZhuang) in unicode(names[1],'gbk')): 
      os.rename(forder_path,names[0]+"\\"+"03") 
      Py_Log(names[1]+"-->"+"03") 
  except Exception,e: 
    print e 
 
def BFS_Dir(dirPath, dirCallback = None, fileCallback = None): 
  queue = [] 
  ret = [] 
  queue.append(dirPath); 
  while len(queue) > 0: 
    tmp = queue.pop(0) 
    if(os.path.isdir(tmp)): 
      ret.append(tmp) 
      for item in os.listdir(tmp): 
        queue.append(os.path.join(tmp, item)) 
      if dirCallback: 
        dirCallback(tmp) 
    elif(os.path.isfile(tmp)): 
      ret.append(tmp) 
      if fileCallback: 
        fileCallback(tmp) 
  return ret 
 
def DFS_Dir(dirPath, dirCallback = None, fileCallback = None): 
  stack = [] 
  ret = [] 
  stack.append(dirPath); 
  while len(stack) > 0: 
    tmp = stack.pop(len(stack) - 1) 
    if(os.path.isdir(tmp)): 
      ret.append(tmp) 
      for item in os.listdir(tmp): 
        stack.append(os.path.join(tmp, item)) 
      if dirCallback: 
        dirCallback(tmp) 
    elif(os.path.isfile(tmp)): 
      ret.append(tmp) 
      if fileCallback: 
        fileCallback(tmp) 
  return ret 
 
def printDir(dirPath): 
  print "dir: " + dirPath 
  if(is_hiden_file(dirPath)): 
    remove_hidden_file(dirPath) 
  else: 
    rename_forder(dirPath) 
 
def printFile(dirPath): 
  print "file: " + dirPath 
  resize_image(dirPath) 
  return True 
 
 
if __name__ == '__main__': 
  while True: 
    path = raw_input("Path:") 
    new_width =int(raw_input("the width U want:")) 
    try: 
      b = BFS_Dir(path , printDir, printFile) 
      Py_Log ("\r\n   **********\r\n"+"*********图片处理完毕*********"+"\r\n  **********\r\n") 
    except: 
      print "Unexpected error:", sys.exc_info() 
    raw_input('press enter key to rehandle')