图片文件批量重命名（Python）

import os

class ImageRename():
    def __init__(self):
        self.path = 'C:/Users/lenovo/Desktop/imglabel/0.6-0.8'

    def rename(self):
        filelist = os.listdir(self.path)
        total_num = len(filelist)

        i = 0

        for item in filelist:
            if item.endswith('.png'):
                src = os.path.join(os.path.abspath(self.path), item)
                dst = os.path.join(os.path.abspath(self.path), format(str(i), '0>2s') + '.png')
                os.rename(src, dst)
                print ('converting %s to %s ...' % (src, dst))
                i = i + 1
            if item.endswith('.jpg'):
                src = os.path.join(os.path.abspath(self.path), item)
                dst = os.path.join(os.path.abspath(self.path), format(str(i), '0>2s') + '.jpg')
                os.rename(src, dst)
                print ('converting %s to %s ...' % (src, dst))
                i = i + 1
            if item.endswith('.JPG'):
                src = os.path.join(os.path.abspath(self.path), item)
                dst = os.path.join(os.path.abspath(self.path), format(str(i), '0>2s') + '.JPG')
                os.rename(src, dst)
                print ('converting %s to %s ...' % (src, dst))
                i = i + 1
        print ('total %d to rename & converted %d jpgs' % (total_num, i))

if __name__ == '__main__':
    newname = ImageRename()
    newname.rename()