uuid_replacer helper

uuid_replacer.py

import re
import argparse
from uuid import uuid4

if __name__ == '__main__':
    parser = argparse.ArgumentParser(prog = "uuid_replacer", description="Update all UUIDs from JSON file for random UUIDs")
    parser.add_argument("input", help = ".json file name")
    parser.add_argument("-o", "--output", help = "output filename. default = output.json", default="output.json", dest="output", required=False)
    parser.add_argument("-i", "--ids", help="UUIDs to be replaced. (If ommited all UUIDs will be replaced)", required = False, nargs="*", action="store")

    args = parser.parse_args()

    file = open(args.input)
    data = file.read()
    file.close()

    if (args.ids != None and len(args.ids) > 0):
        ids = list(set(args.ids))
    else:
        ids = list(set(re.findall(r'[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}', data)))
    for c_id in ids:
        data = re.sub(re.compile(str(c_id)), str(uuid4()), data)

    output_file = open(args.output, 'w')
    output_file.write(data)
    output_file.close()