Recursively look for images inside a source folder and create flat symlinks inside a destination folder.

image_linker.py

#! /usr/bin/python3

""" 
Recursively look for images inside a source folder 
and create flat symlinks inside a destination folder. 
"""

from argparse import ArgumentParser
from os import walk
from pathlib import Path

DIR = 0
FILES = 2

VALID_EXTENTIONS = {'.jpg',
                    '.jpeg',
                    '.bmp',
                    '.gif',
                    '.tiff',
                    '.exif',
                    '.rif'}

if __name__ == '__main__':
    parser = ArgumentParser()
    parser.add_argument('source')
    parser.add_argument('destination')
    args = parser.parse_args()

    tree = walk(args.source)
    for node in tree:
        for file in node[FILES]:
            if Path(file).suffix in VALID_EXTENTIONS:
                image = Path(node[DIR], file)
                link = Path(args.destination, image.name)
                if not link.exists():
                    link.symlink_to(image)