Python script to set modifiy date of images files to the one specified in exif metadata

applyexifdate.py

"""
Python script to set modifiy date of images files to the one specified in exif metadata.
Usage:
  python applyexifdate.py Photos/**/*.jpg
"""

import argparse
from datetime import datetime
import logging
import os
import sys
import time

# pip install exif
from exif import Image


def get_exif_date(img_file):
    """
    Return exif date. Appearantly it's stored in format YYYY:MM:DD HH:MM:SS.
    """
    img = Image(img_file)
    
    if not img.has_exif:
        return None
    
    timestamp = None

    for key in ['datetime', 'datetime_original']:
        if hasattr(img, key):
            timestamp = getattr(img, key)
            break
    
    if not timestamp and hasattr(img, 'gps_timestamp') and hasattr(img, 'gps_datestamp'):
        hour = ':'.join(img.gps_timestamp)
        timestamp = f'{img.gps_datestamp} {hour}'
    
    if not timestamp:
        return
    
    timestamp_format = '%Y:%m:%d %H:%M:%S'

    return datetime.strptime(timestamp, timestamp_format)


def parse_args(args):
    parser = argparse.ArgumentParser()
    parser.add_argument('files', nargs='+')
    parser.add_argument('-l', '--log-level', choices=['info', 'debug'], default='info')
    
    return parser.parse_args(args)


def main():
    args = parse_args(sys.argv[1:])
    
    logging.basicConfig(
        level=getattr(logging, args.log_level.upper()),
        format='%(asctime)s %(message)s',
    )
    
    all_count = 0
    processed_count = 0
    for image_path in args.files:
        all_count += 1
        with open(image_path, 'rb') as img_file:
            modified_date = get_exif_date(img_file)
            if not modified_date:
                continue

            logging.debug(f'{image_path} {modified_date}')
            timestamp = time.mktime(modified_date.timetuple())
            os.utime(image_path, (os.path.getatime(image_path), timestamp))
            processed_count += 1
    
    logging.info(f'Processed {processed_count} out of {all_count}')

if __name__ == '__main__':
    main()