# -*- coding: utf-8 -*- import os path = "d:\\curl\data\\" for file in os.listdir(path):    print file     if(os.path.isfile(os.path.join(path,file))==True):         if file.find('.')>0:             newname="new_"+file            os.rename(os.path.join(path,file),os.path.join(path,newname))             print file,'ok'

代码2：

# -*- coding: utf-8 -*- import os def BatchRename(path,pattern):    os.chdir(path)    fileList=os.listdir(path)    dotIndex = pattern.rfind('.')    fileName = pattern[ : dotIndex]    fileExt = pattern[dotIndex : ]    genNum = 0    for fileItem in fileList:        fileFullName = fileName + '_' + str(genNum) + fileExt        os.rename(fileItem, fileFullName)        print (fileItem + ' => ' + fileFullName)         genNum += 1if __name__ == '__main__':    BatchRename("d:\\curl\\data","test.log")

 代码3：

import osos.chdir("d:\\curl\\data")for file in os.listdir("d:\\curl\\data"):     print file    if(os.path.splitext(file)[1] == ".log"):        print "yes"        os.rename(file, os.path.splitext(file)[0]+".jpg")