passgen.py

#!/usr/bin/env python
# vim:ts=8 sts=4 sw=4 expandtab ft=python

#
# Copyright (c) 2015, chys <admin@CHYS.INFO>
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#   this software without specific prior written permission.
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import argparse
import random
import string


POOL = ''.join([
    string.ascii_letters,
    string.digits,
    '`~!@#$%^&*()-_=+[]{}|:;,.<>/?',  # Intentionally omitted \ ' "
])


def main():
    parser = argparse.ArgumentParser(
        description='Generate random password')
    parser.add_argument('length', type=int, help='Length')
    args = parser.parse_args()

    gen = random.SystemRandom()

    print(''.join(gen.choice(POOL) for _ in range(args.length)))


if __name__ == '__main__':
    main()