batch_update_exif_date.py

# Update exif information of image files in yyyy_mm_dd folder to yyyy_mm_dd 10:00:00
# need exiftool <- brew install exiftool

from pathlib import Path
import subprocess

def dt_fmt(dir_name):
  yyyy, mm, dd = dir_name.split('_')
  return f'{yyyy}:{mm}:{dd} 10:00:00'


pth = Path('.')

for subdir in pth.iterdir():
  if subdir.is_dir():
    for file in subdir.glob('*'):
      cmd = [
        "exiftool",
        f"-datetimeoriginal='{dt_fmt(str(subdir))}'",
        f"{file}"
      ]
      subprocess.call(cmd)

# delete original file made by exiftool
# for subdir in pth.iterdir():
#   if subdir.is_dir():
#     for file in subdir.glob('*'):
#       if str(file).endswith('_original'):
#         file.unlink()