Simple python utility that renames files in bulk using regex

bulk_rename.py

import os
import sys
import argparse
import re

parser = argparse.ArgumentParser(description="Rename some files.")
parser.add_argument("path", type=str, help="Path to work on.")
parser.add_argument("text", type=str, help="Text to replace with.")
parser.add_argument("-e", "--enumerate", action="store_true", dest="enumerate", help="Add a number at the end of a file name.")
parser.add_argument("-r", "--regex", dest="regex", help="Runs all filenames against provided regex, then changes matches (if any) to provided text.", default="[\s\S]*")

if __name__ == "__main__":
    args = vars(parser.parse_args())
    prog = re.compile(args["regex"])

    for num, file in enumerate(os.listdir(args["path"])):
        #Make sure we don't overwrite ourselves
        if file != os.path.basename(__file__):
            repl = args["text"] + str(num) if args["enumerate"] else ""
            old_name = os.path.join(args["path"], file)
            new_name = os.path.join(args["path"], re.sub(prog, repl, file))

            print("Renaming {} to {}".format(old_name, new_name))
            os.rename(old_name, new_name)