xkcd #936 password generator

randompw.py

#!/usr/bin/env python3
"""
Random password generator, ala https://xkcd.com/936/

The wordlist is assumed to be a list of words in the language of your choice,
of the sizes of your choice.  I got mine out of aspell::

    aspell dump master  | \
        sed -e "s/'s$//" -e '/^[A-Z]/d' -e '/^.\{4,6\}$/!d' | \
        sort -u  > wordlist.txt

Kinda figured 4-6 were good word lengths.
"""

import argparse
import os
import random

    
def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('--wordlist', '-w', type=str, default='~/etc/wordlist.txt')
    parser.add_argument('--number', '-n', type=int, default=4, help="number of words")

    args = parser.parse_args()
        
    with open(os.path.expanduser(args.wordlist), 'r') as f:
        words = f.readlines()
    
    parts = []
    for i in range(args.number):
        parts.append(random.choice(words).strip())

    print(' '.join(parts))


if __name__ == '__main__':
    main()