Mass rename files in your local Instagram archive according to a new filename pattern

instaloader_mass_rename.py

import argparse
import glob
import os
import re
import sys

import instaloader


def json_type(filename: str):
    if not (filename.endswith('.json') or filename.endswith('.json.xz')):
        raise argparse.ArgumentTypeError("{} not a JSON file.")
    return filename


parser = argparse.ArgumentParser()
parser.add_argument('filename_pattern')
parser.add_argument('json', nargs='+', type=json_type)
args = parser.parse_args()

L = instaloader.Instaloader(filename_pattern=args.filename_pattern)

try:
    for json_file in args.json:
        try:
            item = instaloader.load_structure_from_file(L.context, json_file)
            if not (isinstance(item, instaloader.Post) or isinstance(item, instaloader.StoryItem)):
                print("{} / {} skipped.", json_file, item)
                continue
            pattern = r'(.*)(_location\.txt|_comments\.json|\.(json(\.xz)?|txt|jpg|mp4))$'
            for file in glob.glob('{}*'.format(re.match(pattern, json_file).group(1))):
                fm = re.match(pattern, file)
                if fm:
                    dirname = os.path.dirname(file) + '/' if os.path.dirname(file) else ''
                    new_filename = dirname + L.format_filename(item) + fm.group(2)
                    print("{} -> {}".format(file, new_filename))
                    os.rename(file, new_filename)
                else:
                    print("{} not renamed.".format(file))
        except instaloader.InstaloaderException as err:
            print("{}: {}".format(json_file, err), file=sys.stderr)
except KeyboardInterrupt:
    pass