Renames JPEG files to the date and time it's taken.

rename-by-date.py

# This work is published under CC0 (https://creativecommons.org/publicdomain/zero/1.0/)
# To the extent possible under law, Aidin Gharibnavaz (http://www.aidinhut.com) has waived
# all copyright and related or neighboring rights to this work.

import sys
import os

try:
    import exifread
except ImportError:
    print("This script needs 'exifread' package. Install it using:")
    print("   pip install exifread")
    sys.exit(6)


def main(path_to_convert):

    # Finding all JPEG files.
    for image_file in os.listdir(path_to_convert):
        if not image_file.lower().endswith('jpg'):
            continue

        # Reading tags from the file.
        with open(os.path.join(path_to_convert, image_file), 'rb') as fd:
            tags = exifread.process_file(fd)

        # creating new file name.
        date_str = tags['Image DateTime'].values
        new_file_name = date_str.replace(':', '').replace(' ', '_')
        new_file_path = os.path.join(path_to_convert, new_file_name + '.JPG')

        # Checking for duplicate names.
        name_counter = 1
        while os.path.exists(new_file_path):
            new_file_path = os.path.join(path_to_convert, new_file_name,
                                         '-' + name_counter + '.JPG')
            name_counter += 1

        # Renaming the file.
        os.rename(os.path.join(path_to_convert, image_file),
                  new_file_path)

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print("Usage:", sys.argv[0], "path-to-convert")
        sys.exit(7)

    main(sys.argv[1])

So cool
But it doesn't work for same date photos