Python 修改文件重命名代码

import os
import shutil
path = os.getcwd()

for file in os.listdir(path):
folder_path = os.path.join(path,file)
if os.path.isdir(folder_path):
index_no = 1000000000
for subfile in os.listdir(folder_path):
imagepath = os.path.join(folder_path,subfile)
newname = str(index_no)+'.jpg'
newimagename = os.path.join(folder_path,newname)
os.rename(imagepath,newimagename)
print file+'---'+str(index_no)
index_no+=1