import osimport exifreaddef getExif(filename):  FIELD = 'EXIF DateTimeOriginal'  fd = open(filename, 'rb')  tags = exifread.process_file(fd)  fd.close()  if FIELD in tags:    new_name = str(tags[FIELD]).replace(':', '').replace(' ', '_') + os.path.splitext(filename)[1]    tot = 1    while os.path.exists(new_name):      new_name = str(tags[FIELD]).replace(':', '').replace(' ', '_') + '_' + str(tot) + os.path.splitext(filename)[1]      tot += 1    new_name2 = new_name.split(".")[0] + '__' +filename    print(new_name2)    os.rename(filename, new_name2)  else:    print('No {} found'.format(FIELD))for filename in os.listdir('.'):  if os.path.isfile(filename):    getExif(filename)