图片批量重命名（python实现）「建议收藏」

import os
path = "/media/hltt3838/DATA/dida_data/20210421_camera_IMU/dataset-dir/cam0"
filelist = os.listdir(path)
count=1403636580513555456
for file in filelist:
    print(file)
for file in filelist:   
    Olddir=os.path.join(path,file)  
    if os.path.isdir(Olddir):  
        continue
    filename=os.path.splitext(file)[0]   
    filetype=os.path.splitext(file)[1]  
   # filetype = ".jpg" #如果想改变图片的格式，可以改这个地方
    Newdir=os.path.join(path,str(count).zfill(4)+filetype)  
    os.rename(Olddir,Newdir)
 
    count+=50000000