Do you own a DSLR? If so, do you transfer your images to your computer, then look at the JPEGs and delete the crappy ones? If you do, your RAW images may be leftover. This Python script helps you cleaning up your image folders after deleting unwanted JPEGs. See http://blog.philippklaus.de/2012/12/cleaning-leftover-raw-images-after-selecting-imag…

remove-orphaned-raw-images.py

#!/usr/bin/env python2.7
# -*- coding: utf-8 -*-

"""
Written on 2012-12-12 by Philipp Klaus <philipp.l.klaus →AT→ web.de>.
Check <https://gist.github.com/4271012> for newer versions.

Also check <https://gist.github.com/3155743> for a tool to
rename JPEGs according to their EXIF shot time.
"""

import argparse, os, errno, re, shutil, sys

def stderr(line):
    sys.stderr.write(line + '\n')
    sys.stderr.flush()

def delete(files, backup_folder=None, verbose=True, dry=True):
    if len(files) == 0: return
    if backup_folder:
        try:
            os.mkdir(backup_folder)
        except OSError, e:
            if not e.errno == errno.EEXIST:
                raise
        for filename in files:
            if verbose: print "Moving %s to %s." % (filename, backup_folder)
            if not dry: shutil.move(filename, os.path.join(backup_folder))
    else:
        for filename in files:
            if verbose: print "Deleting %s." % (filename,)
            if not dry: os.remove(filename)

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Cleanup of leftover raw image files (*.CR2).')
    parser.add_argument('--no-backup', '-n', action='store_true',
            help='Don\'t backup orphaned raw images  -  delete them immediately.')
    parser.add_argument('--backup-folder', '-b', default='raw_orphans',
            help='Folder to move orphaned raw images to.')
    parser.add_argument('--tolerant', '-t', action='store_true',
            help='Accept JPEGs that just start with the name of the raw image as a match too.')
    parser.add_argument('--quiet', '-q', action='store_true',
            help='Silence the less important output of this tool.')
    parser.add_argument('--dry', '-d', action='store_true',
            help='Dry run: Only show what the tool would do without actually executing.')
    parser.add_argument('folder', metavar='CHECK_FOLDER', default='./', nargs='?',
            help='Folder to check for raw images. Defaults to the current working directory')
    args = parser.parse_args()
    verbose = not args.quiet
    raw_images, jpeg_images_bare_names = [], []
    all_files = list(os.listdir(args.folder))
    # sort files into raw and jpeg files
    for filename in all_files:
        # The file name of raw image ends with .CR2 for Canon EOS cameras
        if re.match(r'(.*)\.[cC][rR]2$', filename):
            raw_images.append(filename)
        if re.match(r'(.*)\.[jJ][pP][eE]?[gG]$', filename):
            jpeg_images_bare_names.append(os.path.splitext(filename)[0])
    # Check if there is a jpeg for each raw image
    orphans = []
    for raw_image in raw_images:
        if args.tolerant:
            is_orphan = True
            for jpg in jpeg_images_bare_names:
                if jpg.startswith(os.path.splitext(raw_image)[0]):
                    is_orphan = False
            if is_orphan:
                orphans.append(raw_image)
        elif os.path.splitext(raw_image)[0] not in jpeg_images_bare_names:
            orphans.append(raw_image)
    if len(raw_images) + len(jpeg_images_bare_names) == 0:
        if verbose: stderr("No images found. Are you sure you wanted to check '%s' for orphaned RAW images?" %
                (args.folder,))
        sys.exit(2)
    elif len(raw_images) == 0:
        if verbose: print "No RAW images found, but %i JPEGs. Won't do anything now." % (
                len(jpeg_images_bare_names),)
        sys.exit(0)
    elif len(orphans) == 0:
        if verbose: print "%i RAW images found, and %i JPEGs but no orphans. Won't do anything now." % (
                len(raw_images), len(jpeg_images_bare_names))
        sys.exit(0)
    else:
        print "Found %i JPEGs and %i .CR2s. Of those RAW images, %i are orphans and will be removed." % (
                len(jpeg_images_bare_names), len(raw_images), len(orphans))
    backup_folder = None if args.no_backup else os.path.join(args.folder,args.backup_folder)
    delete([os.path.join(args.folder,orphan) for orphan in orphans], backup_folder=backup_folder, verbose=verbose, dry=args.dry)