# -*- coding: UTF-8 -*-
# python 3.9.0 64bit

import os
import exifread


def renamePic(dir):
    shootingTimeField = 'EXIF DateTimeOriginal'
    for root, dirs, files in os.walk(dir):
        for name in files:
            picName = os.path.join(root, name)
            fd = open(picName, 'rb')
            tags 
 
= exifread.process_file(fd)
            fd.close()
            if shootingTimeField in tags:
                info = str(tags[shootingTimeField])
                newName = 'IMG_' + info[0:10] + '_' + info[11:11 + 8] + os.path.splitext(picName)[1]
                newName = newName.replace(':', '')
                newName 
 
= os.path.join(root, newName)

                count = 1
                while os.path.exists(newName):
                    newName = 'IMG_' + info[0:10] + '_' + info[11:11 + 8] + '_' + str(count) + os.path.splitext(picName)[1]
                    newName = newName.replace(':', '')
                    newName 
 
= os.path.join(root, newName)
                    count += 1

                os.rename(picName, newName)
                print('{} --> {}'.format(os.path.basename(picName), os.path.basename(newName)))
            else:
                print('pass: {}'.format(os.path.basename(picName)))


if '__main__' == __name__:
    dir = input('Please input picture directory path which you want to rename: ')
    print()
    renamePic(dir)
    print()
    print('Done!')
    input('Press any key to exit!')