python修改目录下指定后缀的文件名

# -*- coding:utf8 -*-import osimport sysclass BatchRename():    def __init__(self):        self.path = '/home/admin/img'    def rename(self):        filelist = os.listdir(self.path)        total_num = len(filelist)        i = 0        for item in filelist:            if item.endswith('.jpb'):                src = os.path.join(os.path.abspath(self.path), item)                dst = os.path.join(os.path.abspath(self.path), str(i)+'.jpb')#str(item).split('.')[0]+'ps' + '.jpg')                try:                    os.rename(src, dst)                    print 'converting %s to %s ...' % (src, dst)                    i = i + 1                except:                    continue        print 'total %d to rename & converted %d jpgs' % (total_num, i)if __name__ == '__main__':    demo = BatchRename()    demo.rename()