Add Exif date for the missing

add_exif_date.py

from datetime import datetime
from os import listdir
from os.path import isfile, join

import piexif

img_dir = "./img/"
files_in_dir = [f for f in listdir(img_dir) if isfile(join(img_dir, f))]

for file in files_in_dir:
    filename = f"{img_dir}/{file}"
    print(filename)
    exif_dict = piexif.load(filename)
    print(exif_dict)
    print()
    if not exif_dict.get("Exif"):
        file_date = " ".join(filename.split("_")[1:3])
        new_date = datetime.strptime(file_date, "%Y%m%d %H%M%S")
        # convert to exif date format
        exif_date = new_date.strftime("%Y:%m:%d %H:%M:%S")
        exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal] = exif_date
        exif_dict["Exif"][piexif.ExifIFD.DateTimeDigitized] = exif_date
        print(exif_dict)
        exif_bytes = piexif.dump(exif_dict)
        piexif.insert(exif_bytes, filename)
    else:
        print("pass")